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Finding the Fourth Proportional to 355,627.43, 532,681.05 and 287,866.88

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Solution

The fourth proportional to 355,627.43, 532,681.05 and 287,866.88 is: 431,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,627.43 : 532,681.05 = 287,866.88 : x
  2. Step 2: Convert to fraction form
    355,627.43/532,681.05 = 287,866.88/x
  3. Step 3: Cross multiply
    355,627.43x = 532,681.05 × 287,866.88
  4. Step 4: Simplify right side
    355,627.43x = 153,341,231,898.62
  5. Step 5: Solve for x
    x = 153,341,231,898.62/355,627.43
  6. Step 6: Final answer
    x = 431,185.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.