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Finding the Fourth Proportional to 353,077.92, 529,607.08 and 128,442.51

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Solution

The fourth proportional to 353,077.92, 529,607.08 and 128,442.51 is: 192,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,077.92 : 529,607.08 = 128,442.51 : x
  2. Step 2: Convert to fraction form
    353,077.92/529,607.08 = 128,442.51/x
  3. Step 3: Cross multiply
    353,077.92x = 529,607.08 × 128,442.51
  4. Step 4: Simplify right side
    353,077.92x = 68,024,062,668.97
  5. Step 5: Solve for x
    x = 68,024,062,668.97/353,077.92
  6. Step 6: Final answer
    x = 192,660.20

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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.