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Finding the Fourth Proportional to 457,338.75, 631,127.49 and 256,134.75

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Solution

The fourth proportional to 457,338.75, 631,127.49 and 256,134.75 is: 353,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,338.75 : 631,127.49 = 256,134.75 : x
  2. Step 2: Convert to fraction form
    457,338.75/631,127.49 = 256,134.75/x
  3. Step 3: Cross multiply
    457,338.75x = 631,127.49 × 256,134.75
  4. Step 4: Simplify right side
    457,338.75x = 161,653,681,869.28
  5. Step 5: Solve for x
    x = 161,653,681,869.28/457,338.75
  6. Step 6: Final answer
    x = 353,465.96

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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.