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Finding the Fourth Proportional to 479,869.11, 720,246.47 and 243,377.87

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Solution

The fourth proportional to 479,869.11, 720,246.47 and 243,377.87 is: 365,291.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,869.11 : 720,246.47 = 243,377.87 : x
  2. Step 2: Convert to fraction form
    479,869.11/720,246.47 = 243,377.87/x
  3. Step 3: Cross multiply
    479,869.11x = 720,246.47 × 243,377.87
  4. Step 4: Simplify right side
    479,869.11x = 175,292,046,925.50
  5. Step 5: Solve for x
    x = 175,292,046,925.50/479,869.11
  6. Step 6: Final answer
    x = 365,291.37

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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.