Home / 268,942.60-403,428.48-100,507.15

Finding the Fourth Proportional to 268,942.60, 403,428.48 and 100,507.15

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Solution

The fourth proportional to 268,942.60, 403,428.48 and 100,507.15 is: 150,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,942.60 : 403,428.48 = 100,507.15 : x
  2. Step 2: Convert to fraction form
    268,942.60/403,428.48 = 100,507.15/x
  3. Step 3: Cross multiply
    268,942.60x = 403,428.48 × 100,507.15
  4. Step 4: Simplify right side
    268,942.60x = 40,547,446,753.63
  5. Step 5: Solve for x
    x = 40,547,446,753.63/268,942.60
  6. Step 6: Final answer
    x = 150,766.17

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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.