Home / 331,623.86-457,177.52-280,431.20

Finding the Fourth Proportional to 331,623.86, 457,177.52 and 280,431.20

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Solution

The fourth proportional to 331,623.86, 457,177.52 and 280,431.20 is: 386,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,623.86 : 457,177.52 = 280,431.20 : x
  2. Step 2: Convert to fraction form
    331,623.86/457,177.52 = 280,431.20/x
  3. Step 3: Cross multiply
    331,623.86x = 457,177.52 × 280,431.20
  4. Step 4: Simplify right side
    331,623.86x = 128,206,842,390.65
  5. Step 5: Solve for x
    x = 128,206,842,390.65/331,623.86
  6. Step 6: Final answer
    x = 386,603.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.