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Finding the Fourth Proportional to 389,801.66, 584,723.28 and 123,583.01

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Solution

The fourth proportional to 389,801.66, 584,723.28 and 123,583.01 is: 185,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,801.66 : 584,723.28 = 123,583.01 : x
  2. Step 2: Convert to fraction form
    389,801.66/584,723.28 = 123,583.01/x
  3. Step 3: Cross multiply
    389,801.66x = 584,723.28 × 123,583.01
  4. Step 4: Simplify right side
    389,801.66x = 72,261,860,035.86
  5. Step 5: Solve for x
    x = 72,261,860,035.86/389,801.66
  6. Step 6: Final answer
    x = 185,381.10

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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.