Home / 438,332.15-657,334.20-153,912.80

Finding the Fourth Proportional to 438,332.15, 657,334.20 and 153,912.80

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Solution

The fourth proportional to 438,332.15, 657,334.20 and 153,912.80 is: 230,811.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,332.15 : 657,334.20 = 153,912.80 : x
  2. Step 2: Convert to fraction form
    438,332.15/657,334.20 = 153,912.80/x
  3. Step 3: Cross multiply
    438,332.15x = 657,334.20 × 153,912.80
  4. Step 4: Simplify right side
    438,332.15x = 101,172,147,257.76
  5. Step 5: Solve for x
    x = 101,172,147,257.76/438,332.15
  6. Step 6: Final answer
    x = 230,811.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.