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Finding the Fourth Proportional to 292,134.56, 437,048.87 and 221,261.40

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Solution

The fourth proportional to 292,134.56, 437,048.87 and 221,261.40 is: 331,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,134.56 : 437,048.87 = 221,261.40 : x
  2. Step 2: Convert to fraction form
    292,134.56/437,048.87 = 221,261.40/x
  3. Step 3: Cross multiply
    292,134.56x = 437,048.87 × 221,261.40
  4. Step 4: Simplify right side
    292,134.56x = 96,702,043,738.31
  5. Step 5: Solve for x
    x = 96,702,043,738.31/292,134.56
  6. Step 6: Final answer
    x = 331,018.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.