Home / 280,875.40-387,612.66-167,708.04

Finding the Fourth Proportional to 280,875.40, 387,612.66 and 167,708.04

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Solution

The fourth proportional to 280,875.40, 387,612.66 and 167,708.04 is: 231,439.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,875.40 : 387,612.66 = 167,708.04 : x
  2. Step 2: Convert to fraction form
    280,875.40/387,612.66 = 167,708.04/x
  3. Step 3: Cross multiply
    280,875.40x = 387,612.66 × 167,708.04
  4. Step 4: Simplify right side
    280,875.40x = 65,005,759,487.79
  5. Step 5: Solve for x
    x = 65,005,759,487.79/280,875.40
  6. Step 6: Final answer
    x = 231,439.85

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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.