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Finding the Fourth Proportional to 235,391.12, 352,975.76 and 85,526

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Solution

The fourth proportional to 235,391.12, 352,975.76 and 85,526 is: 128,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,391.12 : 352,975.76 = 85,526 : x
  2. Step 2: Convert to fraction form
    235,391.12/352,975.76 = 85,526/x
  3. Step 3: Cross multiply
    235,391.12x = 352,975.76 × 85,526
  4. Step 4: Simplify right side
    235,391.12x = 30,188,604,849.76
  5. Step 5: Solve for x
    x = 30,188,604,849.76/235,391.12
  6. Step 6: Final answer
    x = 128,248.70

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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.