Home / 331,812.60-497,661.30-121,342.20

Finding the Fourth Proportional to 331,812.60, 497,661.30 and 121,342.20

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Solution

The fourth proportional to 331,812.60, 497,661.30 and 121,342.20 is: 181,992.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,812.60 : 497,661.30 = 121,342.20 : x
  2. Step 2: Convert to fraction form
    331,812.60/497,661.30 = 121,342.20/x
  3. Step 3: Cross multiply
    331,812.60x = 497,661.30 × 121,342.20
  4. Step 4: Simplify right side
    331,812.60x = 60,387,316,996.86
  5. Step 5: Solve for x
    x = 60,387,316,996.86/331,812.60
  6. Step 6: Final answer
    x = 181,992.24

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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.