Home / 280,028.40-386,439.84-159,170.46

Finding the Fourth Proportional to 280,028.40, 386,439.84 and 159,170.46

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Solution

The fourth proportional to 280,028.40, 386,439.84 and 159,170.46 is: 219,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,028.40 : 386,439.84 = 159,170.46 : x
  2. Step 2: Convert to fraction form
    280,028.40/386,439.84 = 159,170.46/x
  3. Step 3: Cross multiply
    280,028.40x = 386,439.84 × 159,170.46
  4. Step 4: Simplify right side
    280,028.40x = 61,509,807,095.13
  5. Step 5: Solve for x
    x = 61,509,807,095.13/280,028.40
  6. Step 6: Final answer
    x = 219,655.60

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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.