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Finding the Fourth Proportional to 206,979.40, 310,469.10 and 151,210.90

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Solution

The fourth proportional to 206,979.40, 310,469.10 and 151,210.90 is: 226,816.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,979.40 : 310,469.10 = 151,210.90 : x
  2. Step 2: Convert to fraction form
    206,979.40/310,469.10 = 151,210.90/x
  3. Step 3: Cross multiply
    206,979.40x = 310,469.10 × 151,210.90
  4. Step 4: Simplify right side
    206,979.40x = 46,946,312,033.19
  5. Step 5: Solve for x
    x = 46,946,312,033.19/206,979.40
  6. Step 6: Final answer
    x = 226,816.35

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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.