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Finding the Fourth Proportional to 345,513.72, 518,344.37 and 120,881.48

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Solution

The fourth proportional to 345,513.72, 518,344.37 and 120,881.48 is: 181,348.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,513.72 : 518,344.37 = 120,881.48 : x
  2. Step 2: Convert to fraction form
    345,513.72/518,344.37 = 120,881.48/x
  3. Step 3: Cross multiply
    345,513.72x = 518,344.37 × 120,881.48
  4. Step 4: Simplify right side
    345,513.72x = 62,658,233,990.86
  5. Step 5: Solve for x
    x = 62,658,233,990.86/345,513.72
  6. Step 6: Final answer
    x = 181,348.04

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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.