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Finding the Fourth Proportional to 472,635.87, 652,120.82 and 279,048.10

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Solution

The fourth proportional to 472,635.87, 652,120.82 and 279,048.10 is: 385,017.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,635.87 : 652,120.82 = 279,048.10 : x
  2. Step 2: Convert to fraction form
    472,635.87/652,120.82 = 279,048.10/x
  3. Step 3: Cross multiply
    472,635.87x = 652,120.82 × 279,048.10
  4. Step 4: Simplify right side
    472,635.87x = 181,973,074,396.20
  5. Step 5: Solve for x
    x = 181,973,074,396.20/472,635.87
  6. Step 6: Final answer
    x = 385,017.48

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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.