Home / 280,243.68-386,747.90-159,406.24

Finding the Fourth Proportional to 280,243.68, 386,747.90 and 159,406.24

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Solution

The fourth proportional to 280,243.68, 386,747.90 and 159,406.24 is: 219,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,243.68 : 386,747.90 = 159,406.24 : x
  2. Step 2: Convert to fraction form
    280,243.68/386,747.90 = 159,406.24/x
  3. Step 3: Cross multiply
    280,243.68x = 386,747.90 × 159,406.24
  4. Step 4: Simplify right side
    280,243.68x = 61,650,028,566.90
  5. Step 5: Solve for x
    x = 61,650,028,566.90/280,243.68
  6. Step 6: Final answer
    x = 219,987.22

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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.