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Finding the Fourth Proportional to 331,401.60, 497,102.40 and 121,190.40

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Solution

The fourth proportional to 331,401.60, 497,102.40 and 121,190.40 is: 181,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,401.60 : 497,102.40 = 121,190.40 : x
  2. Step 2: Convert to fraction form
    331,401.60/497,102.40 = 121,190.40/x
  3. Step 3: Cross multiply
    331,401.60x = 497,102.40 × 121,190.40
  4. Step 4: Simplify right side
    331,401.60x = 60,244,038,696.96
  5. Step 5: Solve for x
    x = 60,244,038,696.96/331,401.60
  6. Step 6: Final answer
    x = 181,785.60

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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.