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Finding the Fourth Proportional to 368,405.38, 551,950.66 and 199,818.18

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Solution

The fourth proportional to 368,405.38, 551,950.66 and 199,818.18 is: 299,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,405.38 : 551,950.66 = 199,818.18 : x
  2. Step 2: Convert to fraction form
    368,405.38/551,950.66 = 199,818.18/x
  3. Step 3: Cross multiply
    368,405.38x = 551,950.66 × 199,818.18
  4. Step 4: Simplify right side
    368,405.38x = 110,289,776,331.00
  5. Step 5: Solve for x
    x = 110,289,776,331.00/368,405.38
  6. Step 6: Final answer
    x = 299,370.70

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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.