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Finding the Fourth Proportional to 331,503.64, 497,329.74 and 121,136.20

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Solution

The fourth proportional to 331,503.64, 497,329.74 and 121,136.20 is: 181,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,503.64 : 497,329.74 = 121,136.20 : x
  2. Step 2: Convert to fraction form
    331,503.64/497,329.74 = 121,136.20/x
  3. Step 3: Cross multiply
    331,503.64x = 497,329.74 × 121,136.20
  4. Step 4: Simplify right side
    331,503.64x = 60,244,634,850.59
  5. Step 5: Solve for x
    x = 60,244,634,850.59/331,503.64
  6. Step 6: Final answer
    x = 181,731.44

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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.