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Finding the Fourth Proportional to 340,080.10, 510,120.15 and 103,422.40

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Solution

The fourth proportional to 340,080.10, 510,120.15 and 103,422.40 is: 155,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,080.10 : 510,120.15 = 103,422.40 : x
  2. Step 2: Convert to fraction form
    340,080.10/510,120.15 = 103,422.40/x
  3. Step 3: Cross multiply
    340,080.10x = 510,120.15 × 103,422.40
  4. Step 4: Simplify right side
    340,080.10x = 52,757,850,201.36
  5. Step 5: Solve for x
    x = 52,757,850,201.36/340,080.10
  6. Step 6: Final answer
    x = 155,133.60

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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.