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Finding the Fourth Proportional to 268,490.90, 402,275.55 and 127,946.90

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Solution

The fourth proportional to 268,490.90, 402,275.55 and 127,946.90 is: 191,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,490.90 : 402,275.55 = 127,946.90 : x
  2. Step 2: Convert to fraction form
    268,490.90/402,275.55 = 127,946.90/x
  3. Step 3: Cross multiply
    268,490.90x = 402,275.55 × 127,946.90
  4. Step 4: Simplify right side
    268,490.90x = 51,469,909,568.30
  5. Step 5: Solve for x
    x = 51,469,909,568.30/268,490.90
  6. Step 6: Final answer
    x = 191,700.76

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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.