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Finding the Fourth Proportional to 331,486.80, 497,230.20 and 121,097.40

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Solution

The fourth proportional to 331,486.80, 497,230.20 and 121,097.40 is: 181,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,486.80 : 497,230.20 = 121,097.40 : x
  2. Step 2: Convert to fraction form
    331,486.80/497,230.20 = 121,097.40/x
  3. Step 3: Cross multiply
    331,486.80x = 497,230.20 × 121,097.40
  4. Step 4: Simplify right side
    331,486.80x = 60,213,284,421.48
  5. Step 5: Solve for x
    x = 60,213,284,421.48/331,486.80
  6. Step 6: Final answer
    x = 181,646.10

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1.5x scale

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.