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Finding the Fourth Proportional to 508,861.85, 763,348.13 and 188,976.20

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Solution

The fourth proportional to 508,861.85, 763,348.13 and 188,976.20 is: 283,484.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,861.85 : 763,348.13 = 188,976.20 : x
  2. Step 2: Convert to fraction form
    508,861.85/763,348.13 = 188,976.20/x
  3. Step 3: Cross multiply
    508,861.85x = 763,348.13 × 188,976.20
  4. Step 4: Simplify right side
    508,861.85x = 144,254,625,540.21
  5. Step 5: Solve for x
    x = 144,254,625,540.21/508,861.85
  6. Step 6: Final answer
    x = 283,484.85

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1.5x scale

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.