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Finding the Fourth Proportional to 358,976.72, 538,463.64 and 134,354

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Solution

The fourth proportional to 358,976.72, 538,463.64 and 134,354 is: 201,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,976.72 : 538,463.64 = 134,354 : x
  2. Step 2: Convert to fraction form
    358,976.72/538,463.64 = 134,354/x
  3. Step 3: Cross multiply
    358,976.72x = 538,463.64 × 134,354
  4. Step 4: Simplify right side
    358,976.72x = 72,344,743,888.56
  5. Step 5: Solve for x
    x = 72,344,743,888.56/358,976.72
  6. Step 6: Final answer
    x = 201,530.46

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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.