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Finding the Fourth Proportional to 239,295.63, 330,230.19 and 131,869.50

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Solution

The fourth proportional to 239,295.63, 330,230.19 and 131,869.50 is: 181,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,295.63 : 330,230.19 = 131,869.50 : x
  2. Step 2: Convert to fraction form
    239,295.63/330,230.19 = 131,869.50/x
  3. Step 3: Cross multiply
    239,295.63x = 330,230.19 × 131,869.50
  4. Step 4: Simplify right side
    239,295.63x = 43,547,290,040.21
  5. Step 5: Solve for x
    x = 43,547,290,040.21/239,295.63
  6. Step 6: Final answer
    x = 181,981.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.