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Finding the Fourth Proportional to 212,699.48, 293,532 and 122,072

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Solution

The fourth proportional to 212,699.48, 293,532 and 122,072 is: 168,463.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,699.48 : 293,532 = 122,072 : x
  2. Step 2: Convert to fraction form
    212,699.48/293,532 = 122,072/x
  3. Step 3: Cross multiply
    212,699.48x = 293,532 × 122,072
  4. Step 4: Simplify right side
    212,699.48x = 35,832,038,304
  5. Step 5: Solve for x
    x = 35,832,038,304/212,699.48
  6. Step 6: Final answer
    x = 168,463.22

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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.