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Finding the Fourth Proportional to 390,156, 585,234.28 and 94,668

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Solution

The fourth proportional to 390,156, 585,234.28 and 94,668 is: 142,002.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,156 : 585,234.28 = 94,668 : x
  2. Step 2: Convert to fraction form
    390,156/585,234.28 = 94,668/x
  3. Step 3: Cross multiply
    390,156x = 585,234.28 × 94,668
  4. Step 4: Simplify right side
    390,156x = 55,402,958,819.04
  5. Step 5: Solve for x
    x = 55,402,958,819.04/390,156
  6. Step 6: Final answer
    x = 142,002.07

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.