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Finding the Fourth Proportional to 391,146.56, 586,094.88 and 250,788.80

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Solution

The fourth proportional to 391,146.56, 586,094.88 and 250,788.80 is: 375,782.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,146.56 : 586,094.88 = 250,788.80 : x
  2. Step 2: Convert to fraction form
    391,146.56/586,094.88 = 250,788.80/x
  3. Step 3: Cross multiply
    391,146.56x = 586,094.88 × 250,788.80
  4. Step 4: Simplify right side
    391,146.56x = 146,986,031,641.34
  5. Step 5: Solve for x
    x = 146,986,031,641.34/391,146.56
  6. Step 6: Final answer
    x = 375,782.50

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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.