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Finding the Fourth Proportional to 311,626.85, 430,045.17 and 168,386.88

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Solution

The fourth proportional to 311,626.85, 430,045.17 and 168,386.88 is: 232,373.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,626.85 : 430,045.17 = 168,386.88 : x
  2. Step 2: Convert to fraction form
    311,626.85/430,045.17 = 168,386.88/x
  3. Step 3: Cross multiply
    311,626.85x = 430,045.17 × 168,386.88
  4. Step 4: Simplify right side
    311,626.85x = 72,413,965,416.59
  5. Step 5: Solve for x
    x = 72,413,965,416.59/311,626.85
  6. Step 6: Final answer
    x = 232,373.96

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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.