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Finding the Fourth Proportional to 522,135.56, 720,561.76 and 295,781.06

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Solution

The fourth proportional to 522,135.56, 720,561.76 and 295,781.06 is: 408,186.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,135.56 : 720,561.76 = 295,781.06 : x
  2. Step 2: Convert to fraction form
    522,135.56/720,561.76 = 295,781.06/x
  3. Step 3: Cross multiply
    522,135.56x = 720,561.76 × 295,781.06
  4. Step 4: Simplify right side
    522,135.56x = 213,128,521,168.27
  5. Step 5: Solve for x
    x = 213,128,521,168.27/522,135.56
  6. Step 6: Final answer
    x = 408,186.18

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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.