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Finding the Fourth Proportional to 207,701.40, 311,114.70 and 168,335.40

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Solution

The fourth proportional to 207,701.40, 311,114.70 and 168,335.40 is: 252,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,701.40 : 311,114.70 = 168,335.40 : x
  2. Step 2: Convert to fraction form
    207,701.40/311,114.70 = 168,335.40/x
  3. Step 3: Cross multiply
    207,701.40x = 311,114.70 × 168,335.40
  4. Step 4: Simplify right side
    207,701.40x = 52,371,617,470.38
  5. Step 5: Solve for x
    x = 52,371,617,470.38/207,701.40
  6. Step 6: Final answer
    x = 252,148.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.