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Finding the Fourth Proportional to 207,397.60, 310,318.80 and 188,735.20

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Solution

The fourth proportional to 207,397.60, 310,318.80 and 188,735.20 is: 282,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,397.60 : 310,318.80 = 188,735.20 : x
  2. Step 2: Convert to fraction form
    207,397.60/310,318.80 = 188,735.20/x
  3. Step 3: Cross multiply
    207,397.60x = 310,318.80 × 188,735.20
  4. Step 4: Simplify right side
    207,397.60x = 58,568,080,781.76
  5. Step 5: Solve for x
    x = 58,568,080,781.76/207,397.60
  6. Step 6: Final answer
    x = 282,395.17

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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.