Home / 287,825.12-397,199.04-158,760.69

Finding the Fourth Proportional to 287,825.12, 397,199.04 and 158,760.69

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Solution

The fourth proportional to 287,825.12, 397,199.04 and 158,760.69 is: 219,089.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,825.12 : 397,199.04 = 158,760.69 : x
  2. Step 2: Convert to fraction form
    287,825.12/397,199.04 = 158,760.69/x
  3. Step 3: Cross multiply
    287,825.12x = 397,199.04 × 158,760.69
  4. Step 4: Simplify right side
    287,825.12x = 63,059,593,657.74
  5. Step 5: Solve for x
    x = 63,059,593,657.74/287,825.12
  6. Step 6: Final answer
    x = 219,089.96

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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.