Home / 215,915.07-323,872.10-58,143.66

Finding the Fourth Proportional to 215,915.07, 323,872.10 and 58,143.66

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Solution

The fourth proportional to 215,915.07, 323,872.10 and 58,143.66 is: 87,215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,915.07 : 323,872.10 = 58,143.66 : x
  2. Step 2: Convert to fraction form
    215,915.07/323,872.10 = 58,143.66/x
  3. Step 3: Cross multiply
    215,915.07x = 323,872.10 × 58,143.66
  4. Step 4: Simplify right side
    215,915.07x = 18,831,108,975.17
  5. Step 5: Solve for x
    x = 18,831,108,975.17/215,915.07
  6. Step 6: Final answer
    x = 87,215.35

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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.