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Finding the Fourth Proportional to 216,987.32, 299,477.98 and 129,766.73

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Solution

The fourth proportional to 216,987.32, 299,477.98 and 129,766.73 is: 179,099.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,987.32 : 299,477.98 = 129,766.73 : x
  2. Step 2: Convert to fraction form
    216,987.32/299,477.98 = 129,766.73/x
  3. Step 3: Cross multiply
    216,987.32x = 299,477.98 × 129,766.73
  4. Step 4: Simplify right side
    216,987.32x = 38,862,276,106.49
  5. Step 5: Solve for x
    x = 38,862,276,106.49/216,987.32
  6. Step 6: Final answer
    x = 179,099.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.