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Finding the Fourth Proportional to 548,533.80, 756,672 and 319,065.26

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Solution

The fourth proportional to 548,533.80, 756,672 and 319,065.26 is: 440,132.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,533.80 : 756,672 = 319,065.26 : x
  2. Step 2: Convert to fraction form
    548,533.80/756,672 = 319,065.26/x
  3. Step 3: Cross multiply
    548,533.80x = 756,672 × 319,065.26
  4. Step 4: Simplify right side
    548,533.80x = 241,427,744,631.36
  5. Step 5: Solve for x
    x = 241,427,744,631.36/548,533.80
  6. Step 6: Final answer
    x = 440,132.85

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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.