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Finding the Fourth Proportional to 499,356.90, 749,223.90 and 299,816.40

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Solution

The fourth proportional to 499,356.90, 749,223.90 and 299,816.40 is: 449,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,356.90 : 749,223.90 = 299,816.40 : x
  2. Step 2: Convert to fraction form
    499,356.90/749,223.90 = 299,816.40/x
  3. Step 3: Cross multiply
    499,356.90x = 749,223.90 × 299,816.40
  4. Step 4: Simplify right side
    499,356.90x = 224,629,612,491.96
  5. Step 5: Solve for x
    x = 224,629,612,491.96/499,356.90
  6. Step 6: Final answer
    x = 449,837.81

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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.