Home / 810,515.16-1,215,773.28-211,474.80

Finding the Fourth Proportional to 810,515.16, 1,215,773.28 and 211,474.80

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Solution

The fourth proportional to 810,515.16, 1,215,773.28 and 211,474.80 is: 317,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,515.16 : 1,215,773.28 = 211,474.80 : x
  2. Step 2: Convert to fraction form
    810,515.16/1,215,773.28 = 211,474.80/x
  3. Step 3: Cross multiply
    810,515.16x = 1,215,773.28 × 211,474.80
  4. Step 4: Simplify right side
    810,515.16x = 257,105,411,233.34
  5. Step 5: Solve for x
    x = 257,105,411,233.34/810,515.16
  6. Step 6: Final answer
    x = 317,212.34

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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.