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Finding the Fourth Proportional to 235,540.80, 353,189.60 and 69,307.20

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Solution

The fourth proportional to 235,540.80, 353,189.60 and 69,307.20 is: 103,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,540.80 : 353,189.60 = 69,307.20 : x
  2. Step 2: Convert to fraction form
    235,540.80/353,189.60 = 69,307.20/x
  3. Step 3: Cross multiply
    235,540.80x = 353,189.60 × 69,307.20
  4. Step 4: Simplify right side
    235,540.80x = 24,478,582,245.12
  5. Step 5: Solve for x
    x = 24,478,582,245.12/235,540.80
  6. Step 6: Final answer
    x = 103,925.02

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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.