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Finding the Fourth Proportional to 343,306.20, 514,959.30 and 106,721.40

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Solution

The fourth proportional to 343,306.20, 514,959.30 and 106,721.40 is: 160,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,306.20 : 514,959.30 = 106,721.40 : x
  2. Step 2: Convert to fraction form
    343,306.20/514,959.30 = 106,721.40/x
  3. Step 3: Cross multiply
    343,306.20x = 514,959.30 × 106,721.40
  4. Step 4: Simplify right side
    343,306.20x = 54,957,177,439.02
  5. Step 5: Solve for x
    x = 54,957,177,439.02/343,306.20
  6. Step 6: Final answer
    x = 160,082.10

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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.