Home / 420,276.79-579,998.24-239,005.27

Finding the Fourth Proportional to 420,276.79, 579,998.24 and 239,005.27

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Solution

The fourth proportional to 420,276.79, 579,998.24 and 239,005.27 is: 329,836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,276.79 : 579,998.24 = 239,005.27 : x
  2. Step 2: Convert to fraction form
    420,276.79/579,998.24 = 239,005.27/x
  3. Step 3: Cross multiply
    420,276.79x = 579,998.24 × 239,005.27
  4. Step 4: Simplify right side
    420,276.79x = 138,622,635,950.73
  5. Step 5: Solve for x
    x = 138,622,635,950.73/420,276.79
  6. Step 6: Final answer
    x = 329,836.52

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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.