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Finding the Fourth Proportional to 268,995.52, 371,214.93 and 154,278.60

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Solution

The fourth proportional to 268,995.52, 371,214.93 and 154,278.60 is: 212,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,995.52 : 371,214.93 = 154,278.60 : x
  2. Step 2: Convert to fraction form
    268,995.52/371,214.93 = 154,278.60/x
  3. Step 3: Cross multiply
    268,995.52x = 371,214.93 × 154,278.60
  4. Step 4: Simplify right side
    268,995.52x = 57,270,519,699.50
  5. Step 5: Solve for x
    x = 57,270,519,699.50/268,995.52
  6. Step 6: Final answer
    x = 212,905.11

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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.