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Finding the Fourth Proportional to 331,337.20, 497,005.80 and 309,029.80

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Solution

The fourth proportional to 331,337.20, 497,005.80 and 309,029.80 is: 463,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,337.20 : 497,005.80 = 309,029.80 : x
  2. Step 2: Convert to fraction form
    331,337.20/497,005.80 = 309,029.80/x
  3. Step 3: Cross multiply
    331,337.20x = 497,005.80 × 309,029.80
  4. Step 4: Simplify right side
    331,337.20x = 153,589,602,972.84
  5. Step 5: Solve for x
    x = 153,589,602,972.84/331,337.20
  6. Step 6: Final answer
    x = 463,544.70

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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.