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Finding the Fourth Proportional to 462,951.40, 638,869.86 and 261,748.20

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Solution

The fourth proportional to 462,951.40, 638,869.86 and 261,748.20 is: 361,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,951.40 : 638,869.86 = 261,748.20 : x
  2. Step 2: Convert to fraction form
    462,951.40/638,869.86 = 261,748.20/x
  3. Step 3: Cross multiply
    462,951.40x = 638,869.86 × 261,748.20
  4. Step 4: Simplify right side
    462,951.40x = 167,223,035,889.25
  5. Step 5: Solve for x
    x = 167,223,035,889.25/462,951.40
  6. Step 6: Final answer
    x = 361,210.78

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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.