Home / 280,819.16-387,485.19-159,962.81

Finding the Fourth Proportional to 280,819.16, 387,485.19 and 159,962.81

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Solution

The fourth proportional to 280,819.16, 387,485.19 and 159,962.81 is: 220,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,819.16 : 387,485.19 = 159,962.81 : x
  2. Step 2: Convert to fraction form
    280,819.16/387,485.19 = 159,962.81/x
  3. Step 3: Cross multiply
    280,819.16x = 387,485.19 × 159,962.81
  4. Step 4: Simplify right side
    280,819.16x = 61,983,217,972.81
  5. Step 5: Solve for x
    x = 61,983,217,972.81/280,819.16
  6. Step 6: Final answer
    x = 220,722.90

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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.