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Finding the Fourth Proportional to 502,486.20, 753,470.10 and 186,780.60

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Solution

The fourth proportional to 502,486.20, 753,470.10 and 186,780.60 is: 280,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,486.20 : 753,470.10 = 186,780.60 : x
  2. Step 2: Convert to fraction form
    502,486.20/753,470.10 = 186,780.60/x
  3. Step 3: Cross multiply
    502,486.20x = 753,470.10 × 186,780.60
  4. Step 4: Simplify right side
    502,486.20x = 140,733,597,360.06
  5. Step 5: Solve for x
    x = 140,733,597,360.06/502,486.20
  6. Step 6: Final answer
    x = 280,074.55

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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.