Home / 287,820.72-397,183.68-160,517.76

Finding the Fourth Proportional to 287,820.72, 397,183.68 and 160,517.76

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Solution

The fourth proportional to 287,820.72, 397,183.68 and 160,517.76 is: 221,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,820.72 : 397,183.68 = 160,517.76 : x
  2. Step 2: Convert to fraction form
    287,820.72/397,183.68 = 160,517.76/x
  3. Step 3: Cross multiply
    287,820.72x = 397,183.68 × 160,517.76
  4. Step 4: Simplify right side
    287,820.72x = 63,755,034,622.16
  5. Step 5: Solve for x
    x = 63,755,034,622.16/287,820.72
  6. Step 6: Final answer
    x = 221,509.54

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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.