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Finding the Fourth Proportional to 207,117.90, 310,422.56 and 107,221.19

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Solution

The fourth proportional to 207,117.90, 310,422.56 and 107,221.19 is: 160,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,117.90 : 310,422.56 = 107,221.19 : x
  2. Step 2: Convert to fraction form
    207,117.90/310,422.56 = 107,221.19/x
  3. Step 3: Cross multiply
    207,117.90x = 310,422.56 × 107,221.19
  4. Step 4: Simplify right side
    207,117.90x = 33,283,874,197.83
  5. Step 5: Solve for x
    x = 33,283,874,197.83/207,117.90
  6. Step 6: Final answer
    x = 160,700.13

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