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Finding the Fourth Proportional to 529,518.59, 730,740.11 and 287,801.10

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Solution

The fourth proportional to 529,518.59, 730,740.11 and 287,801.10 is: 397,167.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,518.59 : 730,740.11 = 287,801.10 : x
  2. Step 2: Convert to fraction form
    529,518.59/730,740.11 = 287,801.10/x
  3. Step 3: Cross multiply
    529,518.59x = 730,740.11 × 287,801.10
  4. Step 4: Simplify right side
    529,518.59x = 210,307,806,033.12
  5. Step 5: Solve for x
    x = 210,307,806,033.12/529,518.59
  6. Step 6: Final answer
    x = 397,167.94

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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.