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Finding the Fourth Proportional to 639,782.40, 959,674.88 and 166,467.04

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Solution

The fourth proportional to 639,782.40, 959,674.88 and 166,467.04 is: 249,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,782.40 : 959,674.88 = 166,467.04 : x
  2. Step 2: Convert to fraction form
    639,782.40/959,674.88 = 166,467.04/x
  3. Step 3: Cross multiply
    639,782.40x = 959,674.88 × 166,467.04
  4. Step 4: Simplify right side
    639,782.40x = 159,754,236,635.96
  5. Step 5: Solve for x
    x = 159,754,236,635.96/639,782.40
  6. Step 6: Final answer
    x = 249,700.89

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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.