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Finding the Fourth Proportional to 212,494.16, 293,243.01 and 121,853.54

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Solution

The fourth proportional to 212,494.16, 293,243.01 and 121,853.54 is: 168,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,494.16 : 293,243.01 = 121,853.54 : x
  2. Step 2: Convert to fraction form
    212,494.16/293,243.01 = 121,853.54/x
  3. Step 3: Cross multiply
    212,494.16x = 293,243.01 × 121,853.54
  4. Step 4: Simplify right side
    212,494.16x = 35,732,698,848.76
  5. Step 5: Solve for x
    x = 35,732,698,848.76/212,494.16
  6. Step 6: Final answer
    x = 168,158.50

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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.