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Finding the Fourth Proportional to 340,274.76, 510,373.25 and 90,976.20

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Solution

The fourth proportional to 340,274.76, 510,373.25 and 90,976.20 is: 136,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,274.76 : 510,373.25 = 90,976.20 : x
  2. Step 2: Convert to fraction form
    340,274.76/510,373.25 = 90,976.20/x
  3. Step 3: Cross multiply
    340,274.76x = 510,373.25 × 90,976.20
  4. Step 4: Simplify right side
    340,274.76x = 46,431,815,859.90
  5. Step 5: Solve for x
    x = 46,431,815,859.90/340,274.76
  6. Step 6: Final answer
    x = 136,453.90

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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.