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Finding the Fourth Proportional to 289,755.48, 399,863.55 and 162,422.88

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Solution

The fourth proportional to 289,755.48, 399,863.55 and 162,422.88 is: 224,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,755.48 : 399,863.55 = 162,422.88 : x
  2. Step 2: Convert to fraction form
    289,755.48/399,863.55 = 162,422.88/x
  3. Step 3: Cross multiply
    289,755.48x = 399,863.55 × 162,422.88
  4. Step 4: Simplify right side
    289,755.48x = 64,946,989,398.02
  5. Step 5: Solve for x
    x = 64,946,989,398.02/289,755.48
  6. Step 6: Final answer
    x = 224,144.13

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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.