Home / 438,303.26-657,473.65-172,121.37

Finding the Fourth Proportional to 438,303.26, 657,473.65 and 172,121.37

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Solution

The fourth proportional to 438,303.26, 657,473.65 and 172,121.37 is: 258,189.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,303.26 : 657,473.65 = 172,121.37 : x
  2. Step 2: Convert to fraction form
    438,303.26/657,473.65 = 172,121.37/x
  3. Step 3: Cross multiply
    438,303.26x = 657,473.65 × 172,121.37
  4. Step 4: Simplify right side
    438,303.26x = 113,165,265,376.90
  5. Step 5: Solve for x
    x = 113,165,265,376.90/438,303.26
  6. Step 6: Final answer
    x = 258,189.42

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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.