Home / 278,819.89-417,994.73-120,929.42

Finding the Fourth Proportional to 278,819.89, 417,994.73 and 120,929.42

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Solution

The fourth proportional to 278,819.89, 417,994.73 and 120,929.42 is: 181,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,819.89 : 417,994.73 = 120,929.42 : x
  2. Step 2: Convert to fraction form
    278,819.89/417,994.73 = 120,929.42/x
  3. Step 3: Cross multiply
    278,819.89x = 417,994.73 × 120,929.42
  4. Step 4: Simplify right side
    278,819.89x = 50,547,861,155.78
  5. Step 5: Solve for x
    x = 50,547,861,155.78/278,819.89
  6. Step 6: Final answer
    x = 181,292.17

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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.