Home / 438,501.20-657,924.60-172,216.40

Finding the Fourth Proportional to 438,501.20, 657,924.60 and 172,216.40

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Solution

The fourth proportional to 438,501.20, 657,924.60 and 172,216.40 is: 258,392.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,501.20 : 657,924.60 = 172,216.40 : x
  2. Step 2: Convert to fraction form
    438,501.20/657,924.60 = 172,216.40/x
  3. Step 3: Cross multiply
    438,501.20x = 657,924.60 × 172,216.40
  4. Step 4: Simplify right side
    438,501.20x = 113,305,406,083.44
  5. Step 5: Solve for x
    x = 113,305,406,083.44/438,501.20
  6. Step 6: Final answer
    x = 258,392.47

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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.