Home / 330,532.86-455,979.78-239,689.56

Finding the Fourth Proportional to 330,532.86, 455,979.78 and 239,689.56

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Solution

The fourth proportional to 330,532.86, 455,979.78 and 239,689.56 is: 330,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,532.86 : 455,979.78 = 239,689.56 : x
  2. Step 2: Convert to fraction form
    330,532.86/455,979.78 = 239,689.56/x
  3. Step 3: Cross multiply
    330,532.86x = 455,979.78 × 239,689.56
  4. Step 4: Simplify right side
    330,532.86x = 109,293,592,837.10
  5. Step 5: Solve for x
    x = 109,293,592,837.10/330,532.86
  6. Step 6: Final answer
    x = 330,658.78

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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.