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Finding the Fourth Proportional to 529,144.38, 730,232.42 and 287,426.88

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Solution

The fourth proportional to 529,144.38, 730,232.42 and 287,426.88 is: 396,656.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,144.38 : 730,232.42 = 287,426.88 : x
  2. Step 2: Convert to fraction form
    529,144.38/730,232.42 = 287,426.88/x
  3. Step 3: Cross multiply
    529,144.38x = 730,232.42 × 287,426.88
  4. Step 4: Simplify right side
    529,144.38x = 209,888,424,718.32
  5. Step 5: Solve for x
    x = 209,888,424,718.32/529,144.38
  6. Step 6: Final answer
    x = 396,656.25

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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.