Home / 287,997.03-397,436.15-160,672.66

Finding the Fourth Proportional to 287,997.03, 397,436.15 and 160,672.66

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Solution

The fourth proportional to 287,997.03, 397,436.15 and 160,672.66 is: 221,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,997.03 : 397,436.15 = 160,672.66 : x
  2. Step 2: Convert to fraction form
    287,997.03/397,436.15 = 160,672.66/x
  3. Step 3: Cross multiply
    287,997.03x = 397,436.15 × 160,672.66
  4. Step 4: Simplify right side
    287,997.03x = 63,857,122,808.75
  5. Step 5: Solve for x
    x = 63,857,122,808.75/287,997.03
  6. Step 6: Final answer
    x = 221,728.41

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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.