Home / 420,101.98-579,641.06-238,799.68

Finding the Fourth Proportional to 420,101.98, 579,641.06 and 238,799.68

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Solution

The fourth proportional to 420,101.98, 579,641.06 and 238,799.68 is: 329,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,101.98 : 579,641.06 = 238,799.68 : x
  2. Step 2: Convert to fraction form
    420,101.98/579,641.06 = 238,799.68/x
  3. Step 3: Cross multiply
    420,101.98x = 579,641.06 × 238,799.68
  4. Step 4: Simplify right side
    420,101.98x = 138,418,098,790.76
  5. Step 5: Solve for x
    x = 138,418,098,790.76/420,101.98
  6. Step 6: Final answer
    x = 329,486.90

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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.