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Finding the Fourth Proportional to 547,344.59, 755,328.38 and 305,631.27

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Solution

The fourth proportional to 547,344.59, 755,328.38 and 305,631.27 is: 421,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,344.59 : 755,328.38 = 305,631.27 : x
  2. Step 2: Convert to fraction form
    547,344.59/755,328.38 = 305,631.27/x
  3. Step 3: Cross multiply
    547,344.59x = 755,328.38 × 305,631.27
  4. Step 4: Simplify right side
    547,344.59x = 230,851,970,518.29
  5. Step 5: Solve for x
    x = 230,851,970,518.29/547,344.59
  6. Step 6: Final answer
    x = 421,767.16

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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.