Home / 217,915.80-326,922.30-84,784.20

Finding the Fourth Proportional to 217,915.80, 326,922.30 and 84,784.20

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Solution

The fourth proportional to 217,915.80, 326,922.30 and 84,784.20 is: 127,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,915.80 : 326,922.30 = 84,784.20 : x
  2. Step 2: Convert to fraction form
    217,915.80/326,922.30 = 84,784.20/x
  3. Step 3: Cross multiply
    217,915.80x = 326,922.30 × 84,784.20
  4. Step 4: Simplify right side
    217,915.80x = 27,717,845,667.66
  5. Step 5: Solve for x
    x = 27,717,845,667.66/217,915.80
  6. Step 6: Final answer
    x = 127,195.21

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1.5x scale

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.