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Finding the Fourth Proportional to 351,270.77, 484,765.40 and 215,278.45

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Solution

The fourth proportional to 351,270.77, 484,765.40 and 215,278.45 is: 297,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,270.77 : 484,765.40 = 215,278.45 : x
  2. Step 2: Convert to fraction form
    351,270.77/484,765.40 = 215,278.45/x
  3. Step 3: Cross multiply
    351,270.77x = 484,765.40 × 215,278.45
  4. Step 4: Simplify right side
    351,270.77x = 104,359,543,251.91
  5. Step 5: Solve for x
    x = 104,359,543,251.91/351,270.77
  6. Step 6: Final answer
    x = 297,091.46

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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.