Home / 278,890.79-384,854.56-158,033.52

Finding the Fourth Proportional to 278,890.79, 384,854.56 and 158,033.52

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Solution

The fourth proportional to 278,890.79, 384,854.56 and 158,033.52 is: 218,077.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,890.79 : 384,854.56 = 158,033.52 : x
  2. Step 2: Convert to fraction form
    278,890.79/384,854.56 = 158,033.52/x
  3. Step 3: Cross multiply
    278,890.79x = 384,854.56 × 158,033.52
  4. Step 4: Simplify right side
    278,890.79x = 60,819,920,409.77
  5. Step 5: Solve for x
    x = 60,819,920,409.77/278,890.79
  6. Step 6: Final answer
    x = 218,077.91

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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.