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Finding the Fourth Proportional to 529,088.08, 730,146.86 and 287,375.38

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Solution

The fourth proportional to 529,088.08, 730,146.86 and 287,375.38 is: 396,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,088.08 : 730,146.86 = 287,375.38 : x
  2. Step 2: Convert to fraction form
    529,088.08/730,146.86 = 287,375.38/x
  3. Step 3: Cross multiply
    529,088.08x = 730,146.86 × 287,375.38
  4. Step 4: Simplify right side
    529,088.08x = 209,826,231,348.31
  5. Step 5: Solve for x
    x = 209,826,231,348.31/529,088.08
  6. Step 6: Final answer
    x = 396,580.91

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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.