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Finding the Fourth Proportional to 356,189.42, 534,342.54 and 169,137.74

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Solution

The fourth proportional to 356,189.42, 534,342.54 and 169,137.74 is: 253,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,189.42 : 534,342.54 = 169,137.74 : x
  2. Step 2: Convert to fraction form
    356,189.42/534,342.54 = 169,137.74/x
  3. Step 3: Cross multiply
    356,189.42x = 534,342.54 × 169,137.74
  4. Step 4: Simplify right side
    356,189.42x = 90,377,489,601.46
  5. Step 5: Solve for x
    x = 90,377,489,601.46/356,189.42
  6. Step 6: Final answer
    x = 253,734.35

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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.