Home / 296,640.14-445,035.54-86,278.07

Finding the Fourth Proportional to 296,640.14, 445,035.54 and 86,278.07

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Solution

The fourth proportional to 296,640.14, 445,035.54 and 86,278.07 is: 129,439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,640.14 : 445,035.54 = 86,278.07 : x
  2. Step 2: Convert to fraction form
    296,640.14/445,035.54 = 86,278.07/x
  3. Step 3: Cross multiply
    296,640.14x = 445,035.54 × 86,278.07
  4. Step 4: Simplify right side
    296,640.14x = 38,396,805,247.43
  5. Step 5: Solve for x
    x = 38,396,805,247.43/296,640.14
  6. Step 6: Final answer
    x = 129,439.01

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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.