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Finding the Fourth Proportional to 390,691, 586,039.38 and 95,203

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Solution

The fourth proportional to 390,691, 586,039.38 and 95,203 is: 142,805.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,691 : 586,039.38 = 95,203 : x
  2. Step 2: Convert to fraction form
    390,691/586,039.38 = 95,203/x
  3. Step 3: Cross multiply
    390,691x = 586,039.38 × 95,203
  4. Step 4: Simplify right side
    390,691x = 55,792,707,094.14
  5. Step 5: Solve for x
    x = 55,792,707,094.14/390,691
  6. Step 6: Final answer
    x = 142,805.20

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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.