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Finding the Fourth Proportional to 239,492.60, 359,238.84 and 81,721.04

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Solution

The fourth proportional to 239,492.60, 359,238.84 and 81,721.04 is: 122,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,492.60 : 359,238.84 = 81,721.04 : x
  2. Step 2: Convert to fraction form
    239,492.60/359,238.84 = 81,721.04/x
  3. Step 3: Cross multiply
    239,492.60x = 359,238.84 × 81,721.04
  4. Step 4: Simplify right side
    239,492.60x = 29,357,371,613.19
  5. Step 5: Solve for x
    x = 29,357,371,613.19/239,492.60
  6. Step 6: Final answer
    x = 122,581.54

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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.