Home / 647,943.90-972,102.37-198,730.68

Finding the Fourth Proportional to 647,943.90, 972,102.37 and 198,730.68

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Solution

The fourth proportional to 647,943.90, 972,102.37 and 198,730.68 is: 298,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,943.90 : 972,102.37 = 198,730.68 : x
  2. Step 2: Convert to fraction form
    647,943.90/972,102.37 = 198,730.68/x
  3. Step 3: Cross multiply
    647,943.90x = 972,102.37 × 198,730.68
  4. Step 4: Simplify right side
    647,943.90x = 193,186,561,250.12
  5. Step 5: Solve for x
    x = 193,186,561,250.12/647,943.90
  6. Step 6: Final answer
    x = 298,153.22

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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.