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Finding the Fourth Proportional to 577,421.82, 866,133.18 and 156,697.70

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Solution

The fourth proportional to 577,421.82, 866,133.18 and 156,697.70 is: 235,046.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,421.82 : 866,133.18 = 156,697.70 : x
  2. Step 2: Convert to fraction form
    577,421.82/866,133.18 = 156,697.70/x
  3. Step 3: Cross multiply
    577,421.82x = 866,133.18 × 156,697.70
  4. Step 4: Simplify right side
    577,421.82x = 135,721,072,869.02
  5. Step 5: Solve for x
    x = 135,721,072,869.02/577,421.82
  6. Step 6: Final answer
    x = 235,046.66

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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.