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Finding the Fourth Proportional to 211,179.84, 291,449.06 and 120,549.43

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Solution

The fourth proportional to 211,179.84, 291,449.06 and 120,549.43 is: 166,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,179.84 : 291,449.06 = 120,549.43 : x
  2. Step 2: Convert to fraction form
    211,179.84/291,449.06 = 120,549.43/x
  3. Step 3: Cross multiply
    211,179.84x = 291,449.06 × 120,549.43
  4. Step 4: Simplify right side
    211,179.84x = 35,134,018,057.04
  5. Step 5: Solve for x
    x = 35,134,018,057.04/211,179.84
  6. Step 6: Final answer
    x = 166,370.13

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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.