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Finding the Fourth Proportional to 415,209.60, 622,814.40 and 310,233.60

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Solution

The fourth proportional to 415,209.60, 622,814.40 and 310,233.60 is: 465,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,209.60 : 622,814.40 = 310,233.60 : x
  2. Step 2: Convert to fraction form
    415,209.60/622,814.40 = 310,233.60/x
  3. Step 3: Cross multiply
    415,209.60x = 622,814.40 × 310,233.60
  4. Step 4: Simplify right side
    415,209.60x = 193,217,953,443.84
  5. Step 5: Solve for x
    x = 193,217,953,443.84/415,209.60
  6. Step 6: Final answer
    x = 465,350.40

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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.