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Finding the Fourth Proportional to 213,387.42, 294,344.49 and 136,880.76

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Solution

The fourth proportional to 213,387.42, 294,344.49 and 136,880.76 is: 188,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,387.42 : 294,344.49 = 136,880.76 : x
  2. Step 2: Convert to fraction form
    213,387.42/294,344.49 = 136,880.76/x
  3. Step 3: Cross multiply
    213,387.42x = 294,344.49 × 136,880.76
  4. Step 4: Simplify right side
    213,387.42x = 40,290,097,493.01
  5. Step 5: Solve for x
    x = 40,290,097,493.01/213,387.42
  6. Step 6: Final answer
    x = 188,811.96

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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.