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Finding the Fourth Proportional to 572,552.70, 859,157.10 and 217,821.30

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Solution

The fourth proportional to 572,552.70, 859,157.10 and 217,821.30 is: 326,856.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,552.70 : 859,157.10 = 217,821.30 : x
  2. Step 2: Convert to fraction form
    572,552.70/859,157.10 = 217,821.30/x
  3. Step 3: Cross multiply
    572,552.70x = 859,157.10 × 217,821.30
  4. Step 4: Simplify right side
    572,552.70x = 187,142,716,426.23
  5. Step 5: Solve for x
    x = 187,142,716,426.23/572,552.70
  6. Step 6: Final answer
    x = 326,856.75

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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.