Home / 280,209.21-386,686.72-159,350.48

Finding the Fourth Proportional to 280,209.21, 386,686.72 and 159,350.48

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Solution

The fourth proportional to 280,209.21, 386,686.72 and 159,350.48 is: 219,902.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,209.21 : 386,686.72 = 159,350.48 : x
  2. Step 2: Convert to fraction form
    280,209.21/386,686.72 = 159,350.48/x
  3. Step 3: Cross multiply
    280,209.21x = 386,686.72 × 159,350.48
  4. Step 4: Simplify right side
    280,209.21x = 61,618,714,441.63
  5. Step 5: Solve for x
    x = 61,618,714,441.63/280,209.21
  6. Step 6: Final answer
    x = 219,902.53

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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.