Home / 639,780.31-959,673.18-166,431.50

Finding the Fourth Proportional to 639,780.31, 959,673.18 and 166,431.50

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Solution

The fourth proportional to 639,780.31, 959,673.18 and 166,431.50 is: 249,647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,780.31 : 959,673.18 = 166,431.50 : x
  2. Step 2: Convert to fraction form
    639,780.31/959,673.18 = 166,431.50/x
  3. Step 3: Cross multiply
    639,780.31x = 959,673.18 × 166,431.50
  4. Step 4: Simplify right side
    639,780.31x = 159,719,841,226.65
  5. Step 5: Solve for x
    x = 159,719,841,226.65/639,780.31
  6. Step 6: Final answer
    x = 249,647.95

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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.