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Finding the Fourth Proportional to 207,230.60, 310,845.90 and 74,115.20

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Solution

The fourth proportional to 207,230.60, 310,845.90 and 74,115.20 is: 111,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,230.60 : 310,845.90 = 74,115.20 : x
  2. Step 2: Convert to fraction form
    207,230.60/310,845.90 = 74,115.20/x
  3. Step 3: Cross multiply
    207,230.60x = 310,845.90 × 74,115.20
  4. Step 4: Simplify right side
    207,230.60x = 23,038,406,047.68
  5. Step 5: Solve for x
    x = 23,038,406,047.68/207,230.60
  6. Step 6: Final answer
    x = 111,172.80

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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.