Home / 438,747.36-658,116.18-139,227.72

Finding the Fourth Proportional to 438,747.36, 658,116.18 and 139,227.72

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Solution

The fourth proportional to 438,747.36, 658,116.18 and 139,227.72 is: 208,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,747.36 : 658,116.18 = 139,227.72 : x
  2. Step 2: Convert to fraction form
    438,747.36/658,116.18 = 139,227.72/x
  3. Step 3: Cross multiply
    438,747.36x = 658,116.18 × 139,227.72
  4. Step 4: Simplify right side
    438,747.36x = 91,628,015,236.51
  5. Step 5: Solve for x
    x = 91,628,015,236.51/438,747.36
  6. Step 6: Final answer
    x = 208,840.04

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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.