Home / 438,415.30-657,486.26-172,257.40

Finding the Fourth Proportional to 438,415.30, 657,486.26 and 172,257.40

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Solution

The fourth proportional to 438,415.30, 657,486.26 and 172,257.40 is: 258,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,415.30 : 657,486.26 = 172,257.40 : x
  2. Step 2: Convert to fraction form
    438,415.30/657,486.26 = 172,257.40/x
  3. Step 3: Cross multiply
    438,415.30x = 657,486.26 × 172,257.40
  4. Step 4: Simplify right side
    438,415.30x = 113,256,873,683.32
  5. Step 5: Solve for x
    x = 113,256,873,683.32/438,415.30
  6. Step 6: Final answer
    x = 258,332.39

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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.