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Finding the Fourth Proportional to 272,442.30, 408,663.45 and 124,986.30

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Solution

The fourth proportional to 272,442.30, 408,663.45 and 124,986.30 is: 187,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,442.30 : 408,663.45 = 124,986.30 : x
  2. Step 2: Convert to fraction form
    272,442.30/408,663.45 = 124,986.30/x
  3. Step 3: Cross multiply
    272,442.30x = 408,663.45 × 124,986.30
  4. Step 4: Simplify right side
    272,442.30x = 51,077,332,560.74
  5. Step 5: Solve for x
    x = 51,077,332,560.74/272,442.30
  6. Step 6: Final answer
    x = 187,479.45

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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.