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Finding the Fourth Proportional to 272,030.85, 381,236.85 and 272,030.85

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Solution

The fourth proportional to 272,030.85, 381,236.85 and 272,030.85 is: 381,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,030.85 : 381,236.85 = 272,030.85 : x
  2. Step 2: Convert to fraction form
    272,030.85/381,236.85 = 272,030.85/x
  3. Step 3: Cross multiply
    272,030.85x = 381,236.85 × 272,030.85
  4. Step 4: Simplify right side
    272,030.85x = 103,708,184,356.82
  5. Step 5: Solve for x
    x = 103,708,184,356.82/272,030.85
  6. Step 6: Final answer
    x = 381,236.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.