Home / 278,410.14-417,667.15-128,551.43

Finding the Fourth Proportional to 278,410.14, 417,667.15 and 128,551.43

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Solution

The fourth proportional to 278,410.14, 417,667.15 and 128,551.43 is: 192,851.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,410.14 : 417,667.15 = 128,551.43 : x
  2. Step 2: Convert to fraction form
    278,410.14/417,667.15 = 128,551.43/x
  3. Step 3: Cross multiply
    278,410.14x = 417,667.15 × 128,551.43
  4. Step 4: Simplify right side
    278,410.14x = 53,691,709,396.52
  5. Step 5: Solve for x
    x = 53,691,709,396.52/278,410.14
  6. Step 6: Final answer
    x = 192,851.13

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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.