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Finding the Fourth Proportional to 391,148.56, 586,097.88 and 250,790.80

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Solution

The fourth proportional to 391,148.56, 586,097.88 and 250,790.80 is: 375,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,148.56 : 586,097.88 = 250,790.80 : x
  2. Step 2: Convert to fraction form
    391,148.56/586,097.88 = 250,790.80/x
  3. Step 3: Cross multiply
    391,148.56x = 586,097.88 × 250,790.80
  4. Step 4: Simplify right side
    391,148.56x = 146,987,956,203.50
  5. Step 5: Solve for x
    x = 146,987,956,203.50/391,148.56
  6. Step 6: Final answer
    x = 375,785.50

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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.