Home / 278,606.23-417,969.35-86,476.66

Finding the Fourth Proportional to 278,606.23, 417,969.35 and 86,476.66

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Solution

The fourth proportional to 278,606.23, 417,969.35 and 86,476.66 is: 129,733.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,606.23 : 417,969.35 = 86,476.66 : x
  2. Step 2: Convert to fraction form
    278,606.23/417,969.35 = 86,476.66/x
  3. Step 3: Cross multiply
    278,606.23x = 417,969.35 × 86,476.66
  4. Step 4: Simplify right side
    278,606.23x = 36,144,590,848.14
  5. Step 5: Solve for x
    x = 36,144,590,848.14/278,606.23
  6. Step 6: Final answer
    x = 129,733.61

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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.