Home / 278,910.09-384,895.97-151,585.68

Finding the Fourth Proportional to 278,910.09, 384,895.97 and 151,585.68

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Solution

The fourth proportional to 278,910.09, 384,895.97 and 151,585.68 is: 209,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,910.09 : 384,895.97 = 151,585.68 : x
  2. Step 2: Convert to fraction form
    278,910.09/384,895.97 = 151,585.68/x
  3. Step 3: Cross multiply
    278,910.09x = 384,895.97 × 151,585.68
  4. Step 4: Simplify right side
    278,910.09x = 58,344,717,341.71
  5. Step 5: Solve for x
    x = 58,344,717,341.71/278,910.09
  6. Step 6: Final answer
    x = 209,188.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.