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Finding the Fourth Proportional to 369,321.54, 553,785.21 and 191,649.66

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Solution

The fourth proportional to 369,321.54, 553,785.21 and 191,649.66 is: 287,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,321.54 : 553,785.21 = 191,649.66 : x
  2. Step 2: Convert to fraction form
    369,321.54/553,785.21 = 191,649.66/x
  3. Step 3: Cross multiply
    369,321.54x = 553,785.21 × 191,649.66
  4. Step 4: Simplify right side
    369,321.54x = 106,132,747,209.53
  5. Step 5: Solve for x
    x = 106,132,747,209.53/369,321.54
  6. Step 6: Final answer
    x = 287,372.21

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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.