Home / 210,979.90-316,622.31-82,915.24

Finding the Fourth Proportional to 210,979.90, 316,622.31 and 82,915.24

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Solution

The fourth proportional to 210,979.90, 316,622.31 and 82,915.24 is: 124,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,979.90 : 316,622.31 = 82,915.24 : x
  2. Step 2: Convert to fraction form
    210,979.90/316,622.31 = 82,915.24/x
  3. Step 3: Cross multiply
    210,979.90x = 316,622.31 × 82,915.24
  4. Step 4: Simplify right side
    210,979.90x = 26,252,814,823.00
  5. Step 5: Solve for x
    x = 26,252,814,823.00/210,979.90
  6. Step 6: Final answer
    x = 124,432.78

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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.