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Finding the Fourth Proportional to 529,095.31, 730,156.88 and 287,382.60

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Solution

The fourth proportional to 529,095.31, 730,156.88 and 287,382.60 is: 396,590.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,095.31 : 730,156.88 = 287,382.60 : x
  2. Step 2: Convert to fraction form
    529,095.31/730,156.88 = 287,382.60/x
  3. Step 3: Cross multiply
    529,095.31x = 730,156.88 × 287,382.60
  4. Step 4: Simplify right side
    529,095.31x = 209,834,383,300.74
  5. Step 5: Solve for x
    x = 209,834,383,300.74/529,095.31
  6. Step 6: Final answer
    x = 396,590.90

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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.