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Finding the Fourth Proportional to 388,526.86, 582,527.85 and 198,520.30

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Solution

The fourth proportional to 388,526.86, 582,527.85 and 198,520.30 is: 297,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,526.86 : 582,527.85 = 198,520.30 : x
  2. Step 2: Convert to fraction form
    388,526.86/582,527.85 = 198,520.30/x
  3. Step 3: Cross multiply
    388,526.86x = 582,527.85 × 198,520.30
  4. Step 4: Simplify right side
    388,526.86x = 115,643,603,540.36
  5. Step 5: Solve for x
    x = 115,643,603,540.36/388,526.86
  6. Step 6: Final answer
    x = 297,646.35

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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.