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Finding the Fourth Proportional to 345,430.52, 518,164.28 and 108,791.64

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Solution

The fourth proportional to 345,430.52, 518,164.28 and 108,791.64 is: 163,193.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,430.52 : 518,164.28 = 108,791.64 : x
  2. Step 2: Convert to fraction form
    345,430.52/518,164.28 = 108,791.64/x
  3. Step 3: Cross multiply
    345,430.52x = 518,164.28 × 108,791.64
  4. Step 4: Simplify right side
    345,430.52x = 56,371,941,810.62
  5. Step 5: Solve for x
    x = 56,371,941,810.62/345,430.52
  6. Step 6: Final answer
    x = 163,193.29

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1.5x scale

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.