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Finding the Fourth Proportional to 508,197.38, 701,439.82 and 345,129.80

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Solution

The fourth proportional to 508,197.38, 701,439.82 and 345,129.80 is: 476,365.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,197.38 : 701,439.82 = 345,129.80 : x
  2. Step 2: Convert to fraction form
    508,197.38/701,439.82 = 345,129.80/x
  3. Step 3: Cross multiply
    508,197.38x = 701,439.82 × 345,129.80
  4. Step 4: Simplify right side
    508,197.38x = 242,087,780,418.61
  5. Step 5: Solve for x
    x = 242,087,780,418.61/508,197.38
  6. Step 6: Final answer
    x = 476,365.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.