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Finding the Fourth Proportional to 280,874.40, 387,611.28 and 167,707.04

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Solution

The fourth proportional to 280,874.40, 387,611.28 and 167,707.04 is: 231,438.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,874.40 : 387,611.28 = 167,707.04 : x
  2. Step 2: Convert to fraction form
    280,874.40/387,611.28 = 167,707.04/x
  3. Step 3: Cross multiply
    280,874.40x = 387,611.28 × 167,707.04
  4. Step 4: Simplify right side
    280,874.40x = 65,005,140,439.41
  5. Step 5: Solve for x
    x = 65,005,140,439.41/280,874.40
  6. Step 6: Final answer
    x = 231,438.47

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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.