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Finding the Fourth Proportional to 343,444.62, 515,108.61 and 90,727.86

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Solution

The fourth proportional to 343,444.62, 515,108.61 and 90,727.86 is: 136,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,444.62 : 515,108.61 = 90,727.86 : x
  2. Step 2: Convert to fraction form
    343,444.62/515,108.61 = 90,727.86/x
  3. Step 3: Cross multiply
    343,444.62x = 515,108.61 × 90,727.86
  4. Step 4: Simplify right side
    343,444.62x = 46,734,701,852.87
  5. Step 5: Solve for x
    x = 46,734,701,852.87/343,444.62
  6. Step 6: Final answer
    x = 136,076.38

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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.