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Finding the Fourth Proportional to 388,019.30, 581,651.67 and 185,562.98

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Solution

The fourth proportional to 388,019.30, 581,651.67 and 185,562.98 is: 278,164.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,019.30 : 581,651.67 = 185,562.98 : x
  2. Step 2: Convert to fraction form
    388,019.30/581,651.67 = 185,562.98/x
  3. Step 3: Cross multiply
    388,019.30x = 581,651.67 × 185,562.98
  4. Step 4: Simplify right side
    388,019.30x = 107,933,017,207.18
  5. Step 5: Solve for x
    x = 107,933,017,207.18/388,019.30
  6. Step 6: Final answer
    x = 278,164.04

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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.