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Finding the Fourth Proportional to 270,358.79, 405,599.65 and 143,932.41

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Solution

The fourth proportional to 270,358.79, 405,599.65 and 143,932.41 is: 215,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,358.79 : 405,599.65 = 143,932.41 : x
  2. Step 2: Convert to fraction form
    270,358.79/405,599.65 = 143,932.41/x
  3. Step 3: Cross multiply
    270,358.79x = 405,599.65 × 143,932.41
  4. Step 4: Simplify right side
    270,358.79x = 58,378,934,759.83
  5. Step 5: Solve for x
    x = 58,378,934,759.83/270,358.79
  6. Step 6: Final answer
    x = 215,931.34

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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.