Home / 511,985.45-767,949.47-156,998.50

Finding the Fourth Proportional to 511,985.45, 767,949.47 and 156,998.50

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Solution

The fourth proportional to 511,985.45, 767,949.47 and 156,998.50 is: 235,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,985.45 : 767,949.47 = 156,998.50 : x
  2. Step 2: Convert to fraction form
    511,985.45/767,949.47 = 156,998.50/x
  3. Step 3: Cross multiply
    511,985.45x = 767,949.47 × 156,998.50
  4. Step 4: Simplify right side
    511,985.45x = 120,566,914,865.80
  5. Step 5: Solve for x
    x = 120,566,914,865.80/511,985.45
  6. Step 6: Final answer
    x = 235,488.95

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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.