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Finding the Fourth Proportional to 368,464.86, 552,950.96 and 128,580.12

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Solution

The fourth proportional to 368,464.86, 552,950.96 and 128,580.12 is: 192,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,464.86 : 552,950.96 = 128,580.12 : x
  2. Step 2: Convert to fraction form
    368,464.86/552,950.96 = 128,580.12/x
  3. Step 3: Cross multiply
    368,464.86x = 552,950.96 × 128,580.12
  4. Step 4: Simplify right side
    368,464.86x = 71,098,500,148.01
  5. Step 5: Solve for x
    x = 71,098,500,148.01/368,464.86
  6. Step 6: Final answer
    x = 192,958.70

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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.