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Finding the Fourth Proportional to 577,479.77, 866,265.89 and 172,642.37

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Solution

The fourth proportional to 577,479.77, 866,265.89 and 172,642.37 is: 258,977.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,479.77 : 866,265.89 = 172,642.37 : x
  2. Step 2: Convert to fraction form
    577,479.77/866,265.89 = 172,642.37/x
  3. Step 3: Cross multiply
    577,479.77x = 866,265.89 × 172,642.37
  4. Step 4: Simplify right side
    577,479.77x = 149,554,191,105.22
  5. Step 5: Solve for x
    x = 149,554,191,105.22/577,479.77
  6. Step 6: Final answer
    x = 258,977.37

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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.