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Finding the Fourth Proportional to 212,351.76, 293,052.30 and 121,724.88

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Solution

The fourth proportional to 212,351.76, 293,052.30 and 121,724.88 is: 167,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,351.76 : 293,052.30 = 121,724.88 : x
  2. Step 2: Convert to fraction form
    212,351.76/293,052.30 = 121,724.88/x
  3. Step 3: Cross multiply
    212,351.76x = 293,052.30 × 121,724.88
  4. Step 4: Simplify right side
    212,351.76x = 35,671,754,495.81
  5. Step 5: Solve for x
    x = 35,671,754,495.81/212,351.76
  6. Step 6: Final answer
    x = 167,984.27

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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.