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Finding the Fourth Proportional to 417,376.80, 625,919.40 and 217,630.80

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Solution

The fourth proportional to 417,376.80, 625,919.40 and 217,630.80 is: 326,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,376.80 : 625,919.40 = 217,630.80 : x
  2. Step 2: Convert to fraction form
    417,376.80/625,919.40 = 217,630.80/x
  3. Step 3: Cross multiply
    417,376.80x = 625,919.40 × 217,630.80
  4. Step 4: Simplify right side
    417,376.80x = 136,219,339,757.52
  5. Step 5: Solve for x
    x = 136,219,339,757.52/417,376.80
  6. Step 6: Final answer
    x = 326,370.18

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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.