Home / 268,504.48-402,699.97-78,913.41

Finding the Fourth Proportional to 268,504.48, 402,699.97 and 78,913.41

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Solution

The fourth proportional to 268,504.48, 402,699.97 and 78,913.41 is: 118,353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,504.48 : 402,699.97 = 78,913.41 : x
  2. Step 2: Convert to fraction form
    268,504.48/402,699.97 = 78,913.41/x
  3. Step 3: Cross multiply
    268,504.48x = 402,699.97 × 78,913.41
  4. Step 4: Simplify right side
    268,504.48x = 31,778,427,839.60
  5. Step 5: Solve for x
    x = 31,778,427,839.60/268,504.48
  6. Step 6: Final answer
    x = 118,353.44

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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.