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Finding the Fourth Proportional to 158,981.60, 238,472.40 and 40,662.20

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Solution

The fourth proportional to 158,981.60, 238,472.40 and 40,662.20 is: 60,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,981.60 : 238,472.40 = 40,662.20 : x
  2. Step 2: Convert to fraction form
    158,981.60/238,472.40 = 40,662.20/x
  3. Step 3: Cross multiply
    158,981.60x = 238,472.40 × 40,662.20
  4. Step 4: Simplify right side
    158,981.60x = 9,696,812,423.28
  5. Step 5: Solve for x
    x = 9,696,812,423.28/158,981.60
  6. Step 6: Final answer
    x = 60,993.30

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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.