Home / 216,171.40-298,321.50-135,602.32

Finding the Fourth Proportional to 216,171.40, 298,321.50 and 135,602.32

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Solution

The fourth proportional to 216,171.40, 298,321.50 and 135,602.32 is: 187,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,171.40 : 298,321.50 = 135,602.32 : x
  2. Step 2: Convert to fraction form
    216,171.40/298,321.50 = 135,602.32/x
  3. Step 3: Cross multiply
    216,171.40x = 298,321.50 × 135,602.32
  4. Step 4: Simplify right side
    216,171.40x = 40,453,087,505.88
  5. Step 5: Solve for x
    x = 40,453,087,505.88/216,171.40
  6. Step 6: Final answer
    x = 187,134.32

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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.