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Finding the Fourth Proportional to 542,471.40, 813,512.70 and 276,143.40

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Solution

The fourth proportional to 542,471.40, 813,512.70 and 276,143.40 is: 414,116.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,471.40 : 813,512.70 = 276,143.40 : x
  2. Step 2: Convert to fraction form
    542,471.40/813,512.70 = 276,143.40/x
  3. Step 3: Cross multiply
    542,471.40x = 813,512.70 × 276,143.40
  4. Step 4: Simplify right side
    542,471.40x = 224,646,162,921.18
  5. Step 5: Solve for x
    x = 224,646,162,921.18/542,471.40
  6. Step 6: Final answer
    x = 414,116.14

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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.