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Finding the Fourth Proportional to 516,687.80, 775,031.70 and 264,745.40

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Solution

The fourth proportional to 516,687.80, 775,031.70 and 264,745.40 is: 397,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,687.80 : 775,031.70 = 264,745.40 : x
  2. Step 2: Convert to fraction form
    516,687.80/775,031.70 = 264,745.40/x
  3. Step 3: Cross multiply
    516,687.80x = 775,031.70 × 264,745.40
  4. Step 4: Simplify right side
    516,687.80x = 205,186,077,429.18
  5. Step 5: Solve for x
    x = 205,186,077,429.18/516,687.80
  6. Step 6: Final answer
    x = 397,118.10

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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.