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Finding the Fourth Proportional to 381,518.10, 572,367.06 and 115,280.82

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Solution

The fourth proportional to 381,518.10, 572,367.06 and 115,280.82 is: 172,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,518.10 : 572,367.06 = 115,280.82 : x
  2. Step 2: Convert to fraction form
    381,518.10/572,367.06 = 115,280.82/x
  3. Step 3: Cross multiply
    381,518.10x = 572,367.06 × 115,280.82
  4. Step 4: Simplify right side
    381,518.10x = 65,982,944,017.79
  5. Step 5: Solve for x
    x = 65,982,944,017.79/381,518.10
  6. Step 6: Final answer
    x = 172,948.40

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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.