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Finding the Fourth Proportional to 280,373.55, 386,910.52 and 159,512.24

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Solution

The fourth proportional to 280,373.55, 386,910.52 and 159,512.24 is: 220,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,373.55 : 386,910.52 = 159,512.24 : x
  2. Step 2: Convert to fraction form
    280,373.55/386,910.52 = 159,512.24/x
  3. Step 3: Cross multiply
    280,373.55x = 386,910.52 × 159,512.24
  4. Step 4: Simplify right side
    280,373.55x = 61,716,963,014.15
  5. Step 5: Solve for x
    x = 61,716,963,014.15/280,373.55
  6. Step 6: Final answer
    x = 220,124.05

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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.