Home / 288,738,591,358.64-398,500,692,114.36-172,999,921,709.83

Finding the Fourth Proportional to 288,738,591,358.64, 398,500,692,114.36 and 172,999,921,709.83

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Solution

The fourth proportional to 288,738,591,358.64, 398,500,692,114.36 and 172,999,921,709.83 is: 238,764,718,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,738,591,358.64 : 398,500,692,114.36 = 172,999,921,709.83 : x
  2. Step 2: Convert to fraction form
    288,738,591,358.64/398,500,692,114.36 = 172,999,921,709.83/x
  3. Step 3: Cross multiply
    288,738,591,358.64x = 398,500,692,114.36 × 172,999,921,709.83
  4. Step 4: Simplify right side
    288,738,591,358.64x = 68,940,588,537,097,343,729,664
  5. Step 5: Solve for x
    x = 68,940,588,537,097,343,729,664/288,738,591,358.64
  6. Step 6: Final answer
    x = 238,764,718,677.55

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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.