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Finding the Fourth Proportional to 200,291.65, 300,453.81 and 87,956.26

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Solution

The fourth proportional to 200,291.65, 300,453.81 and 87,956.26 is: 131,941.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,291.65 : 300,453.81 = 87,956.26 : x
  2. Step 2: Convert to fraction form
    200,291.65/300,453.81 = 87,956.26/x
  3. Step 3: Cross multiply
    200,291.65x = 300,453.81 × 87,956.26
  4. Step 4: Simplify right side
    200,291.65x = 26,426,793,430.35
  5. Step 5: Solve for x
    x = 26,426,793,430.35/200,291.65
  6. Step 6: Final answer
    x = 131,941.56

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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.