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Finding the Fourth Proportional to 353,478.81, 530,138.32 and 100,753.86

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Solution

The fourth proportional to 353,478.81, 530,138.32 and 100,753.86 is: 151,108.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,478.81 : 530,138.32 = 100,753.86 : x
  2. Step 2: Convert to fraction form
    353,478.81/530,138.32 = 100,753.86/x
  3. Step 3: Cross multiply
    353,478.81x = 530,138.32 × 100,753.86
  4. Step 4: Simplify right side
    353,478.81x = 53,413,481,822.03
  5. Step 5: Solve for x
    x = 53,413,481,822.03/353,478.81
  6. Step 6: Final answer
    x = 151,108.02

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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.