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Finding the Fourth Proportional to 239,081.68, 358,683 and 171,691.12

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Solution

The fourth proportional to 239,081.68, 358,683 and 171,691.12 is: 257,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,081.68 : 358,683 = 171,691.12 : x
  2. Step 2: Convert to fraction form
    239,081.68/358,683 = 171,691.12/x
  3. Step 3: Cross multiply
    239,081.68x = 358,683 × 171,691.12
  4. Step 4: Simplify right side
    239,081.68x = 61,582,685,994.96
  5. Step 5: Solve for x
    x = 61,582,685,994.96/239,081.68
  6. Step 6: Final answer
    x = 257,580.11

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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.