Home / 278,252.58-417,395.02-78,556.24

Finding the Fourth Proportional to 278,252.58, 417,395.02 and 78,556.24

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Solution

The fourth proportional to 278,252.58, 417,395.02 and 78,556.24 is: 117,838.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,252.58 : 417,395.02 = 78,556.24 : x
  2. Step 2: Convert to fraction form
    278,252.58/417,395.02 = 78,556.24/x
  3. Step 3: Cross multiply
    278,252.58x = 417,395.02 × 78,556.24
  4. Step 4: Simplify right side
    278,252.58x = 32,788,983,365.92
  5. Step 5: Solve for x
    x = 32,788,983,365.92/278,252.58
  6. Step 6: Final answer
    x = 117,838.92

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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.