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Finding the Fourth Proportional to 275,011.94, 379,539.70 and 154,151.30

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Solution

The fourth proportional to 275,011.94, 379,539.70 and 154,151.30 is: 212,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,011.94 : 379,539.70 = 154,151.30 : x
  2. Step 2: Convert to fraction form
    275,011.94/379,539.70 = 154,151.30/x
  3. Step 3: Cross multiply
    275,011.94x = 379,539.70 × 154,151.30
  4. Step 4: Simplify right side
    275,011.94x = 58,506,538,156.61
  5. Step 5: Solve for x
    x = 58,506,538,156.61/275,011.94
  6. Step 6: Final answer
    x = 212,741.81

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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.