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Finding the Fourth Proportional to 279,976.60, 386,369.52 and 152,654.32

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Solution

The fourth proportional to 279,976.60, 386,369.52 and 152,654.32 is: 210,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,976.60 : 386,369.52 = 152,654.32 : x
  2. Step 2: Convert to fraction form
    279,976.60/386,369.52 = 152,654.32/x
  3. Step 3: Cross multiply
    279,976.60x = 386,369.52 × 152,654.32
  4. Step 4: Simplify right side
    279,976.60x = 58,980,976,344.33
  5. Step 5: Solve for x
    x = 58,980,976,344.33/279,976.60
  6. Step 6: Final answer
    x = 210,663.95

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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.