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Finding the Fourth Proportional to 311,885.73, 430,402.61 and 168,645.74

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Solution

The fourth proportional to 311,885.73, 430,402.61 and 168,645.74 is: 232,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,885.73 : 430,402.61 = 168,645.74 : x
  2. Step 2: Convert to fraction form
    311,885.73/430,402.61 = 168,645.74/x
  3. Step 3: Cross multiply
    311,885.73x = 430,402.61 × 168,645.74
  4. Step 4: Simplify right side
    311,885.73x = 72,585,564,930.98
  5. Step 5: Solve for x
    x = 72,585,564,930.98/311,885.73
  6. Step 6: Final answer
    x = 232,731.28

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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.