Home / 278,320.60-417,578.10-100,833.40

Finding the Fourth Proportional to 278,320.60, 417,578.10 and 100,833.40

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Solution

The fourth proportional to 278,320.60, 417,578.10 and 100,833.40 is: 151,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,320.60 : 417,578.10 = 100,833.40 : x
  2. Step 2: Convert to fraction form
    278,320.60/417,578.10 = 100,833.40/x
  3. Step 3: Cross multiply
    278,320.60x = 417,578.10 × 100,833.40
  4. Step 4: Simplify right side
    278,320.60x = 42,105,819,588.54
  5. Step 5: Solve for x
    x = 42,105,819,588.54/278,320.60
  6. Step 6: Final answer
    x = 151,285.31

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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.