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Finding the Fourth Proportional to 216,419.70, 298,850.69 and 134,887.10

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Solution

The fourth proportional to 216,419.70, 298,850.69 and 134,887.10 is: 186,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,419.70 : 298,850.69 = 134,887.10 : x
  2. Step 2: Convert to fraction form
    216,419.70/298,850.69 = 134,887.10/x
  3. Step 3: Cross multiply
    216,419.70x = 298,850.69 × 134,887.10
  4. Step 4: Simplify right side
    216,419.70x = 40,311,102,907.10
  5. Step 5: Solve for x
    x = 40,311,102,907.10/216,419.70
  6. Step 6: Final answer
    x = 186,263.56

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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.