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Finding the Fourth Proportional to 639,751.88, 959,628.96 and 166,436.48

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Solution

The fourth proportional to 639,751.88, 959,628.96 and 166,436.48 is: 249,655.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,751.88 : 959,628.96 = 166,436.48 : x
  2. Step 2: Convert to fraction form
    639,751.88/959,628.96 = 166,436.48/x
  3. Step 3: Cross multiply
    639,751.88x = 959,628.96 × 166,436.48
  4. Step 4: Simplify right side
    639,751.88x = 159,717,266,208.46
  5. Step 5: Solve for x
    x = 159,717,266,208.46/639,751.88
  6. Step 6: Final answer
    x = 249,655.02

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1.5x scale

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.