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Finding the Fourth Proportional to 486,909.99, 730,373.10 and 220,672.77

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Solution

The fourth proportional to 486,909.99, 730,373.10 and 220,672.77 is: 331,012.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,909.99 : 730,373.10 = 220,672.77 : x
  2. Step 2: Convert to fraction form
    486,909.99/730,373.10 = 220,672.77/x
  3. Step 3: Cross multiply
    486,909.99x = 730,373.10 × 220,672.77
  4. Step 4: Simplify right side
    486,909.99x = 161,173,455,110.49
  5. Step 5: Solve for x
    x = 161,173,455,110.49/486,909.99
  6. Step 6: Final answer
    x = 331,012.83

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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.