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Finding the Fourth Proportional to 389,271.80, 584,166.90 and 178,801.40

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Solution

The fourth proportional to 389,271.80, 584,166.90 and 178,801.40 is: 268,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,271.80 : 584,166.90 = 178,801.40 : x
  2. Step 2: Convert to fraction form
    389,271.80/584,166.90 = 178,801.40/x
  3. Step 3: Cross multiply
    389,271.80x = 584,166.90 × 178,801.40
  4. Step 4: Simplify right side
    389,271.80x = 104,449,859,553.66
  5. Step 5: Solve for x
    x = 104,449,859,553.66/389,271.80
  6. Step 6: Final answer
    x = 268,321.16

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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.