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Finding the Fourth Proportional to 235,511.39, 353,980.79 and 155,821.16

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Solution

The fourth proportional to 235,511.39, 353,980.79 and 155,821.16 is: 234,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,511.39 : 353,980.79 = 155,821.16 : x
  2. Step 2: Convert to fraction form
    235,511.39/353,980.79 = 155,821.16/x
  3. Step 3: Cross multiply
    235,511.39x = 353,980.79 × 155,821.16
  4. Step 4: Simplify right side
    235,511.39x = 55,157,695,350.84
  5. Step 5: Solve for x
    x = 55,157,695,350.84/235,511.39
  6. Step 6: Final answer
    x = 234,203.94

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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.