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Finding the Fourth Proportional to 211,253.84, 316,880.42 and 71,110.88

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Solution

The fourth proportional to 211,253.84, 316,880.42 and 71,110.88 is: 106,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,253.84 : 316,880.42 = 71,110.88 : x
  2. Step 2: Convert to fraction form
    211,253.84/316,880.42 = 71,110.88/x
  3. Step 3: Cross multiply
    211,253.84x = 316,880.42 × 71,110.88
  4. Step 4: Simplify right side
    211,253.84x = 22,533,645,520.97
  5. Step 5: Solve for x
    x = 22,533,645,520.97/211,253.84
  6. Step 6: Final answer
    x = 106,666.21

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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.