Home / 420,211.80-579,890.16-229,223.52

Finding the Fourth Proportional to 420,211.80, 579,890.16 and 229,223.52

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Solution

The fourth proportional to 420,211.80, 579,890.16 and 229,223.52 is: 316,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,211.80 : 579,890.16 = 229,223.52 : x
  2. Step 2: Convert to fraction form
    420,211.80/579,890.16 = 229,223.52/x
  3. Step 3: Cross multiply
    420,211.80x = 579,890.16 × 229,223.52
  4. Step 4: Simplify right side
    420,211.80x = 132,924,463,688.56
  5. Step 5: Solve for x
    x = 132,924,463,688.56/420,211.80
  6. Step 6: Final answer
    x = 316,327.30

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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.