Home / 328,208.86-492,269.55-91,531.72

Finding the Fourth Proportional to 328,208.86, 492,269.55 and 91,531.72

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Solution

The fourth proportional to 328,208.86, 492,269.55 and 91,531.72 is: 137,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,208.86 : 492,269.55 = 91,531.72 : x
  2. Step 2: Convert to fraction form
    328,208.86/492,269.55 = 91,531.72/x
  3. Step 3: Cross multiply
    328,208.86x = 492,269.55 × 91,531.72
  4. Step 4: Simplify right side
    328,208.86x = 45,058,278,615.13
  5. Step 5: Solve for x
    x = 45,058,278,615.13/328,208.86
  6. Step 6: Final answer
    x = 137,285.38

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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.