Home / 420,221.48-579,933.05-238,950.28

Finding the Fourth Proportional to 420,221.48, 579,933.05 and 238,950.28

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Solution

The fourth proportional to 420,221.48, 579,933.05 and 238,950.28 is: 329,766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,221.48 : 579,933.05 = 238,950.28 : x
  2. Step 2: Convert to fraction form
    420,221.48/579,933.05 = 238,950.28/x
  3. Step 3: Cross multiply
    420,221.48x = 579,933.05 × 238,950.28
  4. Step 4: Simplify right side
    420,221.48x = 138,575,164,678.75
  5. Step 5: Solve for x
    x = 138,575,164,678.75/420,221.48
  6. Step 6: Final answer
    x = 329,766.97

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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.