Home / 438,426.20-657,812.10-172,141.40

Finding the Fourth Proportional to 438,426.20, 657,812.10 and 172,141.40

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Solution

The fourth proportional to 438,426.20, 657,812.10 and 172,141.40 is: 258,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,426.20 : 657,812.10 = 172,141.40 : x
  2. Step 2: Convert to fraction form
    438,426.20/657,812.10 = 172,141.40/x
  3. Step 3: Cross multiply
    438,426.20x = 657,812.10 × 172,141.40
  4. Step 4: Simplify right side
    438,426.20x = 113,236,695,830.94
  5. Step 5: Solve for x
    x = 113,236,695,830.94/438,426.20
  6. Step 6: Final answer
    x = 258,279.95

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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.