Home / 442,394.47-663,589.64-138,810.85

Finding the Fourth Proportional to 442,394.47, 663,589.64 and 138,810.85

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Solution

The fourth proportional to 442,394.47, 663,589.64 and 138,810.85 is: 208,215.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,394.47 : 663,589.64 = 138,810.85 : x
  2. Step 2: Convert to fraction form
    442,394.47/663,589.64 = 138,810.85/x
  3. Step 3: Cross multiply
    442,394.47x = 663,589.64 × 138,810.85
  4. Step 4: Simplify right side
    442,394.47x = 92,113,441,979.59
  5. Step 5: Solve for x
    x = 92,113,441,979.59/442,394.47
  6. Step 6: Final answer
    x = 208,215.63

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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.