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Finding the Fourth Proportional to 542,486.40, 813,535.20 and 276,158.40

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Solution

The fourth proportional to 542,486.40, 813,535.20 and 276,158.40 is: 414,138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,486.40 : 813,535.20 = 276,158.40 : x
  2. Step 2: Convert to fraction form
    542,486.40/813,535.20 = 276,158.40/x
  3. Step 3: Cross multiply
    542,486.40x = 813,535.20 × 276,158.40
  4. Step 4: Simplify right side
    542,486.40x = 224,664,579,175.68
  5. Step 5: Solve for x
    x = 224,664,579,175.68/542,486.40
  6. Step 6: Final answer
    x = 414,138.64

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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.