Home / 438,564.56-657,317.03-213,587.87

Finding the Fourth Proportional to 438,564.56, 657,317.03 and 213,587.87

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Solution

The fourth proportional to 438,564.56, 657,317.03 and 213,587.87 is: 320,123.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,564.56 : 657,317.03 = 213,587.87 : x
  2. Step 2: Convert to fraction form
    438,564.56/657,317.03 = 213,587.87/x
  3. Step 3: Cross multiply
    438,564.56x = 657,317.03 × 213,587.87
  4. Step 4: Simplify right side
    438,564.56x = 140,394,939,997.90
  5. Step 5: Solve for x
    x = 140,394,939,997.90/438,564.56
  6. Step 6: Final answer
    x = 320,123.77

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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.