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Finding the Fourth Proportional to 280,615.68, 387,257.22 and 167,504.04

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Solution

The fourth proportional to 280,615.68, 387,257.22 and 167,504.04 is: 231,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,615.68 : 387,257.22 = 167,504.04 : x
  2. Step 2: Convert to fraction form
    280,615.68/387,257.22 = 167,504.04/x
  3. Step 3: Cross multiply
    280,615.68x = 387,257.22 × 167,504.04
  4. Step 4: Simplify right side
    280,615.68x = 64,867,148,869.17
  5. Step 5: Solve for x
    x = 64,867,148,869.17/280,615.68
  6. Step 6: Final answer
    x = 231,160.10

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1.5x scale

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.