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Finding the Fourth Proportional to 417,454.40, 625,490.40 and 355,246.40

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Solution

The fourth proportional to 417,454.40, 625,490.40 and 355,246.40 is: 532,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,454.40 : 625,490.40 = 355,246.40 : x
  2. Step 2: Convert to fraction form
    417,454.40/625,490.40 = 355,246.40/x
  3. Step 3: Cross multiply
    417,454.40x = 625,490.40 × 355,246.40
  4. Step 4: Simplify right side
    417,454.40x = 222,203,212,834.56
  5. Step 5: Solve for x
    x = 222,203,212,834.56/417,454.40
  6. Step 6: Final answer
    x = 532,281.40

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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.