Home / 279,816.18-386,135.10-152,489.04

Finding the Fourth Proportional to 279,816.18, 386,135.10 and 152,489.04

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Solution

The fourth proportional to 279,816.18, 386,135.10 and 152,489.04 is: 210,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,816.18 : 386,135.10 = 152,489.04 : x
  2. Step 2: Convert to fraction form
    279,816.18/386,135.10 = 152,489.04/x
  3. Step 3: Cross multiply
    279,816.18x = 386,135.10 × 152,489.04
  4. Step 4: Simplify right side
    279,816.18x = 58,881,370,709.30
  5. Step 5: Solve for x
    x = 58,881,370,709.30/279,816.18
  6. Step 6: Final answer
    x = 210,428.76

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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.