Home / 438,496.20-657,917.10-172,211.40

Finding the Fourth Proportional to 438,496.20, 657,917.10 and 172,211.40

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Solution

The fourth proportional to 438,496.20, 657,917.10 and 172,211.40 is: 258,384.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,496.20 : 657,917.10 = 172,211.40 : x
  2. Step 2: Convert to fraction form
    438,496.20/657,917.10 = 172,211.40/x
  3. Step 3: Cross multiply
    438,496.20x = 657,917.10 × 172,211.40
  4. Step 4: Simplify right side
    438,496.20x = 113,300,824,874.94
  5. Step 5: Solve for x
    x = 113,300,824,874.94/438,496.20
  6. Step 6: Final answer
    x = 258,384.96

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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.