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Finding the Fourth Proportional to 272,129.40, 408,194.10 and 124,385.40

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Solution

The fourth proportional to 272,129.40, 408,194.10 and 124,385.40 is: 186,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,129.40 : 408,194.10 = 124,385.40 : x
  2. Step 2: Convert to fraction form
    272,129.40/408,194.10 = 124,385.40/x
  3. Step 3: Cross multiply
    272,129.40x = 408,194.10 × 124,385.40
  4. Step 4: Simplify right side
    272,129.40x = 50,773,386,406.14
  5. Step 5: Solve for x
    x = 50,773,386,406.14/272,129.40
  6. Step 6: Final answer
    x = 186,578.10

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1.5x scale

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.