Home / 279,811.92-386,139.78-152,487.18

Finding the Fourth Proportional to 279,811.92, 386,139.78 and 152,487.18

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Solution

The fourth proportional to 279,811.92, 386,139.78 and 152,487.18 is: 210,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,811.92 : 386,139.78 = 152,487.18 : x
  2. Step 2: Convert to fraction form
    279,811.92/386,139.78 = 152,487.18/x
  3. Step 3: Cross multiply
    279,811.92x = 386,139.78 × 152,487.18
  4. Step 4: Simplify right side
    279,811.92x = 58,881,366,138.02
  5. Step 5: Solve for x
    x = 58,881,366,138.02/279,811.92
  6. Step 6: Final answer
    x = 210,431.94

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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.