Home / 278,460.52-417,623.87-128,556.83

Finding the Fourth Proportional to 278,460.52, 417,623.87 and 128,556.83

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Solution

The fourth proportional to 278,460.52, 417,623.87 and 128,556.83 is: 192,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,460.52 : 417,623.87 = 128,556.83 : x
  2. Step 2: Convert to fraction form
    278,460.52/417,623.87 = 128,556.83/x
  3. Step 3: Cross multiply
    278,460.52x = 417,623.87 × 128,556.83
  4. Step 4: Simplify right side
    278,460.52x = 53,688,402,224.98
  5. Step 5: Solve for x
    x = 53,688,402,224.98/278,460.52
  6. Step 6: Final answer
    x = 192,804.36

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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.