Home / 278,257.16-417,566.16-100,749.30

Finding the Fourth Proportional to 278,257.16, 417,566.16 and 100,749.30

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Solution

The fourth proportional to 278,257.16, 417,566.16 and 100,749.30 is: 151,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,257.16 : 417,566.16 = 100,749.30 : x
  2. Step 2: Convert to fraction form
    278,257.16/417,566.16 = 100,749.30/x
  3. Step 3: Cross multiply
    278,257.16x = 417,566.16 × 100,749.30
  4. Step 4: Simplify right side
    278,257.16x = 42,069,498,323.69
  5. Step 5: Solve for x
    x = 42,069,498,323.69/278,257.16
  6. Step 6: Final answer
    x = 151,189.28

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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.