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Finding the Fourth Proportional to 212,387, 293,090.54 and 116,891.78

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Solution

The fourth proportional to 212,387, 293,090.54 and 116,891.78 is: 161,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,387 : 293,090.54 = 116,891.78 : x
  2. Step 2: Convert to fraction form
    212,387/293,090.54 = 116,891.78/x
  3. Step 3: Cross multiply
    212,387x = 293,090.54 × 116,891.78
  4. Step 4: Simplify right side
    212,387x = 34,259,874,921.76
  5. Step 5: Solve for x
    x = 34,259,874,921.76/212,387
  6. Step 6: Final answer
    x = 161,308.72

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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.