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Finding the Fourth Proportional to 548,544.82, 757,152.78 and 319,156.06

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Solution

The fourth proportional to 548,544.82, 757,152.78 and 319,156.06 is: 440,528.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,544.82 : 757,152.78 = 319,156.06 : x
  2. Step 2: Convert to fraction form
    548,544.82/757,152.78 = 319,156.06/x
  3. Step 3: Cross multiply
    548,544.82x = 757,152.78 × 319,156.06
  4. Step 4: Simplify right side
    548,544.82x = 241,649,898,082.85
  5. Step 5: Solve for x
    x = 241,649,898,082.85/548,544.82
  6. Step 6: Final answer
    x = 440,528.99

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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.