Home / 438,728.06-658,008.87-213,862.34

Finding the Fourth Proportional to 438,728.06, 658,008.87 and 213,862.34

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Solution

The fourth proportional to 438,728.06, 658,008.87 and 213,862.34 is: 320,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,728.06 : 658,008.87 = 213,862.34 : x
  2. Step 2: Convert to fraction form
    438,728.06/658,008.87 = 213,862.34/x
  3. Step 3: Cross multiply
    438,728.06x = 658,008.87 × 213,862.34
  4. Step 4: Simplify right side
    438,728.06x = 140,723,317,521.99
  5. Step 5: Solve for x
    x = 140,723,317,521.99/438,728.06
  6. Step 6: Final answer
    x = 320,752.94

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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.