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Finding the Fourth Proportional to 211,213.62, 316,825.29 and 70,973.46

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Solution

The fourth proportional to 211,213.62, 316,825.29 and 70,973.46 is: 106,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,213.62 : 316,825.29 = 70,973.46 : x
  2. Step 2: Convert to fraction form
    211,213.62/316,825.29 = 70,973.46/x
  3. Step 3: Cross multiply
    211,213.62x = 316,825.29 × 70,973.46
  4. Step 4: Simplify right side
    211,213.62x = 22,486,187,046.80
  5. Step 5: Solve for x
    x = 22,486,187,046.80/211,213.62
  6. Step 6: Final answer
    x = 106,461.82

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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.