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Finding the Fourth Proportional to 331,343.70, 497,015.55 and 309,036.30

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Solution

The fourth proportional to 331,343.70, 497,015.55 and 309,036.30 is: 463,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,343.70 : 497,015.55 = 309,036.30 : x
  2. Step 2: Convert to fraction form
    331,343.70/497,015.55 = 309,036.30/x
  3. Step 3: Cross multiply
    331,343.70x = 497,015.55 × 309,036.30
  4. Step 4: Simplify right side
    331,343.70x = 153,595,846,614.47
  5. Step 5: Solve for x
    x = 153,595,846,614.47/331,343.70
  6. Step 6: Final answer
    x = 463,554.45

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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.