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Finding the Fourth Proportional to 311,560.15, 429,953.22 and 168,320.14

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Solution

The fourth proportional to 311,560.15, 429,953.22 and 168,320.14 is: 232,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,560.15 : 429,953.22 = 168,320.14 : x
  2. Step 2: Convert to fraction form
    311,560.15/429,953.22 = 168,320.14/x
  3. Step 3: Cross multiply
    311,560.15x = 429,953.22 × 168,320.14
  4. Step 4: Simplify right side
    311,560.15x = 72,369,786,183.85
  5. Step 5: Solve for x
    x = 72,369,786,183.85/311,560.15
  6. Step 6: Final answer
    x = 232,281.91

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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.