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Finding the Fourth Proportional to 279,889.24, 386,251.17 and 152,564.83

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Solution

The fourth proportional to 279,889.24, 386,251.17 and 152,564.83 is: 210,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,889.24 : 386,251.17 = 152,564.83 : x
  2. Step 2: Convert to fraction form
    279,889.24/386,251.17 = 152,564.83/x
  3. Step 3: Cross multiply
    279,889.24x = 386,251.17 × 152,564.83
  4. Step 4: Simplify right side
    279,889.24x = 58,928,344,088.35
  5. Step 5: Solve for x
    x = 58,928,344,088.35/279,889.24
  6. Step 6: Final answer
    x = 210,541.66

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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.