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Finding the Fourth Proportional to 239,445.82, 330,492.81 and 143,934.06

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Solution

The fourth proportional to 239,445.82, 330,492.81 and 143,934.06 is: 198,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,445.82 : 330,492.81 = 143,934.06 : x
  2. Step 2: Convert to fraction form
    239,445.82/330,492.81 = 143,934.06/x
  3. Step 3: Cross multiply
    239,445.82x = 330,492.81 × 143,934.06
  4. Step 4: Simplify right side
    239,445.82x = 47,569,171,944.11
  5. Step 5: Solve for x
    x = 47,569,171,944.11/239,445.82
  6. Step 6: Final answer
    x = 198,663.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.