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Finding the Fourth Proportional to 438,988.39, 658,179.99 and 172,779.47

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Solution

The fourth proportional to 438,988.39, 658,179.99 and 172,779.47 is: 259,050.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,988.39 : 658,179.99 = 172,779.47 : x
  2. Step 2: Convert to fraction form
    438,988.39/658,179.99 = 172,779.47/x
  3. Step 3: Cross multiply
    438,988.39x = 658,179.99 × 172,779.47
  4. Step 4: Simplify right side
    438,988.39x = 113,719,989,836.81
  5. Step 5: Solve for x
    x = 113,719,989,836.81/438,988.39
  6. Step 6: Final answer
    x = 259,050.11

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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.