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Finding the Fourth Proportional to 311,509.15, 429,882.84 and 168,269.27

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Solution

The fourth proportional to 311,509.15, 429,882.84 and 168,269.27 is: 232,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,509.15 : 429,882.84 = 168,269.27 : x
  2. Step 2: Convert to fraction form
    311,509.15/429,882.84 = 168,269.27/x
  3. Step 3: Cross multiply
    311,509.15x = 429,882.84 × 168,269.27
  4. Step 4: Simplify right side
    311,509.15x = 72,336,069,522.91
  5. Step 5: Solve for x
    x = 72,336,069,522.91/311,509.15
  6. Step 6: Final answer
    x = 232,211.70

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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.