Home / 280,380.45-386,911.53-159,510.36

Finding the Fourth Proportional to 280,380.45, 386,911.53 and 159,510.36

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Solution

The fourth proportional to 280,380.45, 386,911.53 and 159,510.36 is: 220,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,380.45 : 386,911.53 = 159,510.36 : x
  2. Step 2: Convert to fraction form
    280,380.45/386,911.53 = 159,510.36/x
  3. Step 3: Cross multiply
    280,380.45x = 386,911.53 × 159,510.36
  4. Step 4: Simplify right side
    280,380.45x = 61,716,397,438.45
  5. Step 5: Solve for x
    x = 61,716,397,438.45/280,380.45
  6. Step 6: Final answer
    x = 220,116.62

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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.