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Finding the Fourth Proportional to 656,860, 985,432.92 and 201,451.48

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Solution

The fourth proportional to 656,860, 985,432.92 and 201,451.48 is: 302,221.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,860 : 985,432.92 = 201,451.48 : x
  2. Step 2: Convert to fraction form
    656,860/985,432.92 = 201,451.48/x
  3. Step 3: Cross multiply
    656,860x = 985,432.92 × 201,451.48
  4. Step 4: Simplify right side
    656,860x = 198,516,920,174.72
  5. Step 5: Solve for x
    x = 198,516,920,174.72/656,860
  6. Step 6: Final answer
    x = 302,221.05

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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.