Home / 268,972.40-403,341.96-91,431.80

Finding the Fourth Proportional to 268,972.40, 403,341.96 and 91,431.80

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Solution

The fourth proportional to 268,972.40, 403,341.96 and 91,431.80 is: 137,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,972.40 : 403,341.96 = 91,431.80 : x
  2. Step 2: Convert to fraction form
    268,972.40/403,341.96 = 91,431.80/x
  3. Step 3: Cross multiply
    268,972.40x = 403,341.96 × 91,431.80
  4. Step 4: Simplify right side
    268,972.40x = 36,878,281,418.33
  5. Step 5: Solve for x
    x = 36,878,281,418.33/268,972.40
  6. Step 6: Final answer
    x = 137,108.05

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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.