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Finding the Fourth Proportional to 388,686.96, 583,002.32 and 122,523.66

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Solution

The fourth proportional to 388,686.96, 583,002.32 and 122,523.66 is: 183,776.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,686.96 : 583,002.32 = 122,523.66 : x
  2. Step 2: Convert to fraction form
    388,686.96/583,002.32 = 122,523.66/x
  3. Step 3: Cross multiply
    388,686.96x = 583,002.32 × 122,523.66
  4. Step 4: Simplify right side
    388,686.96x = 71,431,577,422.27
  5. Step 5: Solve for x
    x = 71,431,577,422.27/388,686.96
  6. Step 6: Final answer
    x = 183,776.62

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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.