Home / 278,125.83-417,228.75-86,015.25

Finding the Fourth Proportional to 278,125.83, 417,228.75 and 86,015.25

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Solution

The fourth proportional to 278,125.83, 417,228.75 and 86,015.25 is: 129,035.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,125.83 : 417,228.75 = 86,015.25 : x
  2. Step 2: Convert to fraction form
    278,125.83/417,228.75 = 86,015.25/x
  3. Step 3: Cross multiply
    278,125.83x = 417,228.75 × 86,015.25
  4. Step 4: Simplify right side
    278,125.83x = 35,888,035,238.44
  5. Step 5: Solve for x
    x = 35,888,035,238.44/278,125.83
  6. Step 6: Final answer
    x = 129,035.25

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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.