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Finding the Fourth Proportional to 119,306.80, 178,949.40 and 40,423.60

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Solution

The fourth proportional to 119,306.80, 178,949.40 and 40,423.60 is: 60,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,306.80 : 178,949.40 = 40,423.60 : x
  2. Step 2: Convert to fraction form
    119,306.80/178,949.40 = 40,423.60/x
  3. Step 3: Cross multiply
    119,306.80x = 178,949.40 × 40,423.60
  4. Step 4: Simplify right side
    119,306.80x = 7,233,778,965.84
  5. Step 5: Solve for x
    x = 7,233,778,965.84/119,306.80
  6. Step 6: Final answer
    x = 60,631.74

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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.