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Finding the Fourth Proportional to 345,425.10, 518,137.65 and 120,710.85

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Solution

The fourth proportional to 345,425.10, 518,137.65 and 120,710.85 is: 181,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,425.10 : 518,137.65 = 120,710.85 : x
  2. Step 2: Convert to fraction form
    345,425.10/518,137.65 = 120,710.85/x
  3. Step 3: Cross multiply
    345,425.10x = 518,137.65 × 120,710.85
  4. Step 4: Simplify right side
    345,425.10x = 62,544,836,148.50
  5. Step 5: Solve for x
    x = 62,544,836,148.50/345,425.10
  6. Step 6: Final answer
    x = 181,066.28

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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.