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Finding the Fourth Proportional to 280,704.80, 387,329.68 and 159,851.04

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Solution

The fourth proportional to 280,704.80, 387,329.68 and 159,851.04 is: 220,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,704.80 : 387,329.68 = 159,851.04 : x
  2. Step 2: Convert to fraction form
    280,704.80/387,329.68 = 159,851.04/x
  3. Step 3: Cross multiply
    280,704.80x = 387,329.68 × 159,851.04
  4. Step 4: Simplify right side
    280,704.80x = 61,915,052,170.87
  5. Step 5: Solve for x
    x = 61,915,052,170.87/280,704.80
  6. Step 6: Final answer
    x = 220,569.98

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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.