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Finding the Fourth Proportional to 384,768.80, 530,705.46 and 270,073.06

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Solution

The fourth proportional to 384,768.80, 530,705.46 and 270,073.06 is: 372,507.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,768.80 : 530,705.46 = 270,073.06 : x
  2. Step 2: Convert to fraction form
    384,768.80/530,705.46 = 270,073.06/x
  3. Step 3: Cross multiply
    384,768.80x = 530,705.46 × 270,073.06
  4. Step 4: Simplify right side
    384,768.80x = 143,329,247,540.91
  5. Step 5: Solve for x
    x = 143,329,247,540.91/384,768.80
  6. Step 6: Final answer
    x = 372,507.46

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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.