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Finding the Fourth Proportional to 331,463.40, 497,259.90 and 131,749.80

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Solution

The fourth proportional to 331,463.40, 497,259.90 and 131,749.80 is: 197,650.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,463.40 : 497,259.90 = 131,749.80 : x
  2. Step 2: Convert to fraction form
    331,463.40/497,259.90 = 131,749.80/x
  3. Step 3: Cross multiply
    331,463.40x = 497,259.90 × 131,749.80
  4. Step 4: Simplify right side
    331,463.40x = 65,513,892,373.02
  5. Step 5: Solve for x
    x = 65,513,892,373.02/331,463.40
  6. Step 6: Final answer
    x = 197,650.46

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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.