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Finding the Fourth Proportional to 207,266.40, 310,899.60 and 74,157.10

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Solution

The fourth proportional to 207,266.40, 310,899.60 and 74,157.10 is: 111,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,266.40 : 310,899.60 = 74,157.10 : x
  2. Step 2: Convert to fraction form
    207,266.40/310,899.60 = 74,157.10/x
  3. Step 3: Cross multiply
    207,266.40x = 310,899.60 × 74,157.10
  4. Step 4: Simplify right side
    207,266.40x = 23,055,412,727.16
  5. Step 5: Solve for x
    x = 23,055,412,727.16/207,266.40
  6. Step 6: Final answer
    x = 111,235.65

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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.