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Finding the Fourth Proportional to 274,989.66, 379,484.52 and 154,130.95

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Solution

The fourth proportional to 274,989.66, 379,484.52 and 154,130.95 is: 212,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,989.66 : 379,484.52 = 154,130.95 : x
  2. Step 2: Convert to fraction form
    274,989.66/379,484.52 = 154,130.95/x
  3. Step 3: Cross multiply
    274,989.66x = 379,484.52 × 154,130.95
  4. Step 4: Simplify right side
    274,989.66x = 58,490,309,907.75
  5. Step 5: Solve for x
    x = 58,490,309,907.75/274,989.66
  6. Step 6: Final answer
    x = 212,700.03

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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.