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Finding the Fourth Proportional to 405,425.52, 607,671.36 and 218,043.36

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Solution

The fourth proportional to 405,425.52, 607,671.36 and 218,043.36 is: 326,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,425.52 : 607,671.36 = 218,043.36 : x
  2. Step 2: Convert to fraction form
    405,425.52/607,671.36 = 218,043.36/x
  3. Step 3: Cross multiply
    405,425.52x = 607,671.36 × 218,043.36
  4. Step 4: Simplify right side
    405,425.52x = 132,498,705,110.17
  5. Step 5: Solve for x
    x = 132,498,705,110.17/405,425.52
  6. Step 6: Final answer
    x = 326,813.92

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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.