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Finding the Fourth Proportional to 235,312.80, 353,163.60 and 109,147.20

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Solution

The fourth proportional to 235,312.80, 353,163.60 and 109,147.20 is: 163,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,312.80 : 353,163.60 = 109,147.20 : x
  2. Step 2: Convert to fraction form
    235,312.80/353,163.60 = 109,147.20/x
  3. Step 3: Cross multiply
    235,312.80x = 353,163.60 × 109,147.20
  4. Step 4: Simplify right side
    235,312.80x = 38,546,818,081.92
  5. Step 5: Solve for x
    x = 38,546,818,081.92/235,312.80
  6. Step 6: Final answer
    x = 163,810.97

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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.