Home / 280,541.16-387,149.28-159,690.24

Finding the Fourth Proportional to 280,541.16, 387,149.28 and 159,690.24

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Solution

The fourth proportional to 280,541.16, 387,149.28 and 159,690.24 is: 220,373.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,541.16 : 387,149.28 = 159,690.24 : x
  2. Step 2: Convert to fraction form
    280,541.16/387,149.28 = 159,690.24/x
  3. Step 3: Cross multiply
    280,541.16x = 387,149.28 × 159,690.24
  4. Step 4: Simplify right side
    280,541.16x = 61,823,961,439.03
  5. Step 5: Solve for x
    x = 61,823,961,439.03/280,541.16
  6. Step 6: Final answer
    x = 220,373.94

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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.