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Finding the Fourth Proportional to 368,465.86, 552,952.46 and 128,581.12

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Solution

The fourth proportional to 368,465.86, 552,952.46 and 128,581.12 is: 192,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,465.86 : 552,952.46 = 128,581.12 : x
  2. Step 2: Convert to fraction form
    368,465.86/552,952.46 = 128,581.12/x
  3. Step 3: Cross multiply
    368,465.86x = 552,952.46 × 128,581.12
  4. Step 4: Simplify right side
    368,465.86x = 71,099,246,613.56
  5. Step 5: Solve for x
    x = 71,099,246,613.56/368,465.86
  6. Step 6: Final answer
    x = 192,960.20

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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.