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Finding the Fourth Proportional to 508,732.70, 763,099.05 and 243,012.20

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Solution

The fourth proportional to 508,732.70, 763,099.05 and 243,012.20 is: 364,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,732.70 : 763,099.05 = 243,012.20 : x
  2. Step 2: Convert to fraction form
    508,732.70/763,099.05 = 243,012.20/x
  3. Step 3: Cross multiply
    508,732.70x = 763,099.05 × 243,012.20
  4. Step 4: Simplify right side
    508,732.70x = 185,442,378,958.41
  5. Step 5: Solve for x
    x = 185,442,378,958.41/508,732.70
  6. Step 6: Final answer
    x = 364,518.30

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Double scale
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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.