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Finding the Fourth Proportional to 415,785.02, 623,672.06 and 100,239.39

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Solution

The fourth proportional to 415,785.02, 623,672.06 and 100,239.39 is: 150,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,785.02 : 623,672.06 = 100,239.39 : x
  2. Step 2: Convert to fraction form
    415,785.02/623,672.06 = 100,239.39/x
  3. Step 3: Cross multiply
    415,785.02x = 623,672.06 × 100,239.39
  4. Step 4: Simplify right side
    415,785.02x = 62,516,506,353.25
  5. Step 5: Solve for x
    x = 62,516,506,353.25/415,785.02
  6. Step 6: Final answer
    x = 150,357.77

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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.