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Finding the Fourth Proportional to 206,883.40, 310,325.10 and 88,785.40

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Solution

The fourth proportional to 206,883.40, 310,325.10 and 88,785.40 is: 133,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,883.40 : 310,325.10 = 88,785.40 : x
  2. Step 2: Convert to fraction form
    206,883.40/310,325.10 = 88,785.40/x
  3. Step 3: Cross multiply
    206,883.40x = 310,325.10 × 88,785.40
  4. Step 4: Simplify right side
    206,883.40x = 27,552,338,133.54
  5. Step 5: Solve for x
    x = 27,552,338,133.54/206,883.40
  6. Step 6: Final answer
    x = 133,178.10

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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.