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Finding the Fourth Proportional to 342,993.54, 514,490.31 and 143,205.15

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Solution

The fourth proportional to 342,993.54, 514,490.31 and 143,205.15 is: 214,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,993.54 : 514,490.31 = 143,205.15 : x
  2. Step 2: Convert to fraction form
    342,993.54/514,490.31 = 143,205.15/x
  3. Step 3: Cross multiply
    342,993.54x = 514,490.31 × 143,205.15
  4. Step 4: Simplify right side
    342,993.54x = 73,677,662,017.10
  5. Step 5: Solve for x
    x = 73,677,662,017.10/342,993.54
  6. Step 6: Final answer
    x = 214,807.73

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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.