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Finding the Fourth Proportional to 351,390.21, 527,018.81 and 171,294.74

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Solution

The fourth proportional to 351,390.21, 527,018.81 and 171,294.74 is: 256,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,390.21 : 527,018.81 = 171,294.74 : x
  2. Step 2: Convert to fraction form
    351,390.21/527,018.81 = 171,294.74/x
  3. Step 3: Cross multiply
    351,390.21x = 527,018.81 × 171,294.74
  4. Step 4: Simplify right side
    351,390.21x = 90,275,546,542.49
  5. Step 5: Solve for x
    x = 90,275,546,542.49/351,390.21
  6. Step 6: Final answer
    x = 256,909.68

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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.