Home / 420,261.76-579,888.68-236,474.72

Finding the Fourth Proportional to 420,261.76, 579,888.68 and 236,474.72

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Solution

The fourth proportional to 420,261.76, 579,888.68 and 236,474.72 is: 326,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261.76 : 579,888.68 = 236,474.72 : x
  2. Step 2: Convert to fraction form
    420,261.76/579,888.68 = 236,474.72/x
  3. Step 3: Cross multiply
    420,261.76x = 579,888.68 × 236,474.72
  4. Step 4: Simplify right side
    420,261.76x = 137,129,013,234.17
  5. Step 5: Solve for x
    x = 137,129,013,234.17/420,261.76
  6. Step 6: Final answer
    x = 326,294.29

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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.