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Finding the Fourth Proportional to 423,141.48, 583,781.99 and 278,025.42

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Solution

The fourth proportional to 423,141.48, 583,781.99 and 278,025.42 is: 383,574.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,141.48 : 583,781.99 = 278,025.42 : x
  2. Step 2: Convert to fraction form
    423,141.48/583,781.99 = 278,025.42/x
  3. Step 3: Cross multiply
    423,141.48x = 583,781.99 × 278,025.42
  4. Step 4: Simplify right side
    423,141.48x = 162,306,231,568.06
  5. Step 5: Solve for x
    x = 162,306,231,568.06/423,141.48
  6. Step 6: Final answer
    x = 383,574.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.