Home / 513,322.20-769,983.30-213,703.20

Finding the Fourth Proportional to 513,322.20, 769,983.30 and 213,703.20

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Solution

The fourth proportional to 513,322.20, 769,983.30 and 213,703.20 is: 320,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,322.20 : 769,983.30 = 213,703.20 : x
  2. Step 2: Convert to fraction form
    513,322.20/769,983.30 = 213,703.20/x
  3. Step 3: Cross multiply
    513,322.20x = 769,983.30 × 213,703.20
  4. Step 4: Simplify right side
    513,322.20x = 164,547,895,156.56
  5. Step 5: Solve for x
    x = 164,547,895,156.56/513,322.20
  6. Step 6: Final answer
    x = 320,554.80

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.