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Finding the Fourth Proportional to 239,516.11, 358,978.31 and 205,543.32

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Solution

The fourth proportional to 239,516.11, 358,978.31 and 205,543.32 is: 308,061.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,516.11 : 358,978.31 = 205,543.32 : x
  2. Step 2: Convert to fraction form
    239,516.11/358,978.31 = 205,543.32/x
  3. Step 3: Cross multiply
    239,516.11x = 358,978.31 × 205,543.32
  4. Step 4: Simplify right side
    239,516.11x = 73,785,593,483.45
  5. Step 5: Solve for x
    x = 73,785,593,483.45/239,516.11
  6. Step 6: Final answer
    x = 308,061.09

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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.