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Finding the Fourth Proportional to 389,908.58, 584,612.52 and 162,361.72

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Solution

The fourth proportional to 389,908.58, 584,612.52 and 162,361.72 is: 243,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,908.58 : 584,612.52 = 162,361.72 : x
  2. Step 2: Convert to fraction form
    389,908.58/584,612.52 = 162,361.72/x
  3. Step 3: Cross multiply
    389,908.58x = 584,612.52 × 162,361.72
  4. Step 4: Simplify right side
    389,908.58x = 94,918,694,280.73
  5. Step 5: Solve for x
    x = 94,918,694,280.73/389,908.58
  6. Step 6: Final answer
    x = 243,438.33

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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.