Home / 288,738,591,361.65-398,500,692,118.50-172,999,921,712.85

Finding the Fourth Proportional to 288,738,591,361.65, 398,500,692,118.50 and 172,999,921,712.85

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Solution

The fourth proportional to 288,738,591,361.65, 398,500,692,118.50 and 172,999,921,712.85 is: 238,764,718,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,738,591,361.65 : 398,500,692,118.50 = 172,999,921,712.85 : x
  2. Step 2: Convert to fraction form
    288,738,591,361.65/398,500,692,118.50 = 172,999,921,712.85/x
  3. Step 3: Cross multiply
    288,738,591,361.65x = 398,500,692,118.50 × 172,999,921,712.85
  4. Step 4: Simplify right side
    288,738,591,361.65x = 68,940,588,539,017,043,116,032
  5. Step 5: Solve for x
    x = 68,940,588,539,017,043,116,032/288,738,591,361.65
  6. Step 6: Final answer
    x = 238,764,718,681.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.