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Finding the Fourth Proportional to 289,324.92, 399,254.52 and 160,254.69

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Solution

The fourth proportional to 289,324.92, 399,254.52 and 160,254.69 is: 221,143.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,324.92 : 399,254.52 = 160,254.69 : x
  2. Step 2: Convert to fraction form
    289,324.92/399,254.52 = 160,254.69/x
  3. Step 3: Cross multiply
    289,324.92x = 399,254.52 × 160,254.69
  4. Step 4: Simplify right side
    289,324.92x = 63,982,407,536.02
  5. Step 5: Solve for x
    x = 63,982,407,536.02/289,324.92
  6. Step 6: Final answer
    x = 221,143.78

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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.