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Finding the Fourth Proportional to 410,654.61, 615,771.45 and 218,638.04

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Solution

The fourth proportional to 410,654.61, 615,771.45 and 218,638.04 is: 327,845.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,654.61 : 615,771.45 = 218,638.04 : x
  2. Step 2: Convert to fraction form
    410,654.61/615,771.45 = 218,638.04/x
  3. Step 3: Cross multiply
    410,654.61x = 615,771.45 × 218,638.04
  4. Step 4: Simplify right side
    410,654.61x = 134,631,059,837.10
  5. Step 5: Solve for x
    x = 134,631,059,837.10/410,654.61
  6. Step 6: Final answer
    x = 327,845.00

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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.