Home / 356,426.52-491,554.54-220,438.86

Finding the Fourth Proportional to 356,426.52, 491,554.54 and 220,438.86

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Solution

The fourth proportional to 356,426.52, 491,554.54 and 220,438.86 is: 304,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,426.52 : 491,554.54 = 220,438.86 : x
  2. Step 2: Convert to fraction form
    356,426.52/491,554.54 = 220,438.86/x
  3. Step 3: Cross multiply
    356,426.52x = 491,554.54 × 220,438.86
  4. Step 4: Simplify right side
    356,426.52x = 108,357,722,425.42
  5. Step 5: Solve for x
    x = 108,357,722,425.42/356,426.52
  6. Step 6: Final answer
    x = 304,011.39

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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.