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Finding the Fourth Proportional to 356,753.88, 535,212.70 and 120,090.28

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Solution

The fourth proportional to 356,753.88, 535,212.70 and 120,090.28 is: 180,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,753.88 : 535,212.70 = 120,090.28 : x
  2. Step 2: Convert to fraction form
    356,753.88/535,212.70 = 120,090.28/x
  3. Step 3: Cross multiply
    356,753.88x = 535,212.70 × 120,090.28
  4. Step 4: Simplify right side
    356,753.88x = 64,273,843,002.56
  5. Step 5: Solve for x
    x = 64,273,843,002.56/356,753.88
  6. Step 6: Final answer
    x = 180,162.98

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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.