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Finding the Fourth Proportional to 389,910.58, 584,615.52 and 162,363.72

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Solution

The fourth proportional to 389,910.58, 584,615.52 and 162,363.72 is: 243,441.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,910.58 : 584,615.52 = 162,363.72 : x
  2. Step 2: Convert to fraction form
    389,910.58/584,615.52 = 162,363.72/x
  3. Step 3: Cross multiply
    389,910.58x = 584,615.52 × 162,363.72
  4. Step 4: Simplify right side
    389,910.58x = 94,920,350,596.93
  5. Step 5: Solve for x
    x = 94,920,350,596.93/389,910.58
  6. Step 6: Final answer
    x = 243,441.33

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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.