Home / 278,904.34-418,312.47-231,821.86

Finding the Fourth Proportional to 278,904.34, 418,312.47 and 231,821.86

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Solution

The fourth proportional to 278,904.34, 418,312.47 and 231,821.86 is: 347,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,904.34 : 418,312.47 = 231,821.86 : x
  2. Step 2: Convert to fraction form
    278,904.34/418,312.47 = 231,821.86/x
  3. Step 3: Cross multiply
    278,904.34x = 418,312.47 × 231,821.86
  4. Step 4: Simplify right side
    278,904.34x = 96,973,974,856.59
  5. Step 5: Solve for x
    x = 96,973,974,856.59/278,904.34
  6. Step 6: Final answer
    x = 347,696.18

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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.