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Finding the Fourth Proportional to 370,612.98, 555,919.44 and 90,127.80

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Solution

The fourth proportional to 370,612.98, 555,919.44 and 90,127.80 is: 135,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,612.98 : 555,919.44 = 90,127.80 : x
  2. Step 2: Convert to fraction form
    370,612.98/555,919.44 = 90,127.80/x
  3. Step 3: Cross multiply
    370,612.98x = 555,919.44 × 90,127.80
  4. Step 4: Simplify right side
    370,612.98x = 50,103,796,104.43
  5. Step 5: Solve for x
    x = 50,103,796,104.43/370,612.98
  6. Step 6: Final answer
    x = 135,191.69

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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.