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Finding the Fourth Proportional to 638,498.14, 957,719.48 and 158,715.80

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Solution

The fourth proportional to 638,498.14, 957,719.48 and 158,715.80 is: 238,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,498.14 : 957,719.48 = 158,715.80 : x
  2. Step 2: Convert to fraction form
    638,498.14/957,719.48 = 158,715.80/x
  3. Step 3: Cross multiply
    638,498.14x = 957,719.48 × 158,715.80
  4. Step 4: Simplify right side
    638,498.14x = 152,005,207,861.61
  5. Step 5: Solve for x
    x = 152,005,207,861.61/638,498.14
  6. Step 6: Final answer
    x = 238,066.80

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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.