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Finding the Fourth Proportional to 499,385.48, 689,153.12 and 273,045.56

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Solution

The fourth proportional to 499,385.48, 689,153.12 and 273,045.56 is: 376,803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,385.48 : 689,153.12 = 273,045.56 : x
  2. Step 2: Convert to fraction form
    499,385.48/689,153.12 = 273,045.56/x
  3. Step 3: Cross multiply
    499,385.48x = 689,153.12 × 273,045.56
  4. Step 4: Simplify right side
    499,385.48x = 188,170,199,576.15
  5. Step 5: Solve for x
    x = 188,170,199,576.15/499,385.48
  6. Step 6: Final answer
    x = 376,803.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.