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Finding the Fourth Proportional to 572,543.60, 858,491.40 and 217,569.20

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Solution

The fourth proportional to 572,543.60, 858,491.40 and 217,569.20 is: 326,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,543.60 : 858,491.40 = 217,569.20 : x
  2. Step 2: Convert to fraction form
    572,543.60/858,491.40 = 217,569.20/x
  3. Step 3: Cross multiply
    572,543.60x = 858,491.40 × 217,569.20
  4. Step 4: Simplify right side
    572,543.60x = 186,781,287,104.88
  5. Step 5: Solve for x
    x = 186,781,287,104.88/572,543.60
  6. Step 6: Final answer
    x = 326,230.68

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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.