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Finding the Fourth Proportional to 415,959.03, 623,938.55 and 135,476.28

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Solution

The fourth proportional to 415,959.03, 623,938.55 and 135,476.28 is: 203,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,959.03 : 623,938.55 = 135,476.28 : x
  2. Step 2: Convert to fraction form
    415,959.03/623,938.55 = 135,476.28/x
  3. Step 3: Cross multiply
    415,959.03x = 623,938.55 × 135,476.28
  4. Step 4: Simplify right side
    415,959.03x = 84,528,873,025.21
  5. Step 5: Solve for x
    x = 84,528,873,025.21/415,959.03
  6. Step 6: Final answer
    x = 203,214.42

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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.