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Finding the Fourth Proportional to 352,626, 528,937.92 and 127,986.12

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Solution

The fourth proportional to 352,626, 528,937.92 and 127,986.12 is: 191,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,626 : 528,937.92 = 127,986.12 : x
  2. Step 2: Convert to fraction form
    352,626/528,937.92 = 127,986.12/x
  3. Step 3: Cross multiply
    352,626x = 528,937.92 × 127,986.12
  4. Step 4: Simplify right side
    352,626x = 67,696,712,101.67
  5. Step 5: Solve for x
    x = 67,696,712,101.67/352,626
  6. Step 6: Final answer
    x = 191,978.79

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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.