Home / 280,487.20-387,074.44-159,637.68

Finding the Fourth Proportional to 280,487.20, 387,074.44 and 159,637.68

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Solution

The fourth proportional to 280,487.20, 387,074.44 and 159,637.68 is: 220,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,487.20 : 387,074.44 = 159,637.68 : x
  2. Step 2: Convert to fraction form
    280,487.20/387,074.44 = 159,637.68/x
  3. Step 3: Cross multiply
    280,487.20x = 387,074.44 × 159,637.68
  4. Step 4: Simplify right side
    280,487.20x = 61,791,665,588.90
  5. Step 5: Solve for x
    x = 61,791,665,588.90/280,487.20
  6. Step 6: Final answer
    x = 220,301.20

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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.