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Finding the Fourth Proportional to 353,162.92, 530,077.32 and 128,740.26

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Solution

The fourth proportional to 353,162.92, 530,077.32 and 128,740.26 is: 193,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,162.92 : 530,077.32 = 128,740.26 : x
  2. Step 2: Convert to fraction form
    353,162.92/530,077.32 = 128,740.26/x
  3. Step 3: Cross multiply
    353,162.92x = 530,077.32 × 128,740.26
  4. Step 4: Simplify right side
    353,162.92x = 68,242,291,996.90
  5. Step 5: Solve for x
    x = 68,242,291,996.90/353,162.92
  6. Step 6: Final answer
    x = 193,231.76

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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.