Home / 278,228.82-417,294.75-128,456.31

Finding the Fourth Proportional to 278,228.82, 417,294.75 and 128,456.31

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Solution

The fourth proportional to 278,228.82, 417,294.75 and 128,456.31 is: 192,662.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,228.82 : 417,294.75 = 128,456.31 : x
  2. Step 2: Convert to fraction form
    278,228.82/417,294.75 = 128,456.31/x
  3. Step 3: Cross multiply
    278,228.82x = 417,294.75 × 128,456.31
  4. Step 4: Simplify right side
    278,228.82x = 53,604,143,767.37
  5. Step 5: Solve for x
    x = 53,604,143,767.37/278,228.82
  6. Step 6: Final answer
    x = 192,662.08

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1.5x scale

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.