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Finding the Fourth Proportional to 338,842.56, 508,281.12 and 128,497.92

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Solution

The fourth proportional to 338,842.56, 508,281.12 and 128,497.92 is: 192,753.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,842.56 : 508,281.12 = 128,497.92 : x
  2. Step 2: Convert to fraction form
    338,842.56/508,281.12 = 128,497.92/x
  3. Step 3: Cross multiply
    338,842.56x = 508,281.12 × 128,497.92
  4. Step 4: Simplify right side
    338,842.56x = 65,313,066,695.27
  5. Step 5: Solve for x
    x = 65,313,066,695.27/338,842.56
  6. Step 6: Final answer
    x = 192,753.43

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1.5x scale

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.