Home / 287,940.11-397,365.80-160,612.97

Finding the Fourth Proportional to 287,940.11, 397,365.80 and 160,612.97

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Solution

The fourth proportional to 287,940.11, 397,365.80 and 160,612.97 is: 221,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,940.11 : 397,365.80 = 160,612.97 : x
  2. Step 2: Convert to fraction form
    287,940.11/397,365.80 = 160,612.97/x
  3. Step 3: Cross multiply
    287,940.11x = 397,365.80 × 160,612.97
  4. Step 4: Simplify right side
    287,940.11x = 63,822,098,524.53
  5. Step 5: Solve for x
    x = 63,822,098,524.53/287,940.11
  6. Step 6: Final answer
    x = 221,650.61

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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.