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Finding the Fourth Proportional to 543,350.70, 815,026.05 and 318,818.70

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Solution

The fourth proportional to 543,350.70, 815,026.05 and 318,818.70 is: 478,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,350.70 : 815,026.05 = 318,818.70 : x
  2. Step 2: Convert to fraction form
    543,350.70/815,026.05 = 318,818.70/x
  3. Step 3: Cross multiply
    543,350.70x = 815,026.05 × 318,818.70
  4. Step 4: Simplify right side
    543,350.70x = 259,845,545,727.14
  5. Step 5: Solve for x
    x = 259,845,545,727.14/543,350.70
  6. Step 6: Final answer
    x = 478,228.05

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Similar ratio
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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.