Home / 643,090.76-964,636.46-163,354.52

Finding the Fourth Proportional to 643,090.76, 964,636.46 and 163,354.52

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Solution

The fourth proportional to 643,090.76, 964,636.46 and 163,354.52 is: 245,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,090.76 : 964,636.46 = 163,354.52 : x
  2. Step 2: Convert to fraction form
    643,090.76/964,636.46 = 163,354.52/x
  3. Step 3: Cross multiply
    643,090.76x = 964,636.46 × 163,354.52
  4. Step 4: Simplify right side
    643,090.76x = 157,577,728,105.20
  5. Step 5: Solve for x
    x = 157,577,728,105.20/643,090.76
  6. Step 6: Final answer
    x = 245,031.87

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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.