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Finding the Fourth Proportional to 308,565.70, 462,848.55 and 86,949.70

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Solution

The fourth proportional to 308,565.70, 462,848.55 and 86,949.70 is: 130,424.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,565.70 : 462,848.55 = 86,949.70 : x
  2. Step 2: Convert to fraction form
    308,565.70/462,848.55 = 86,949.70/x
  3. Step 3: Cross multiply
    308,565.70x = 462,848.55 × 86,949.70
  4. Step 4: Simplify right side
    308,565.70x = 40,244,542,567.94
  5. Step 5: Solve for x
    x = 40,244,542,567.94/308,565.70
  6. Step 6: Final answer
    x = 130,424.55

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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.