Home / 511,736.20-767,661.90-156,747.40

Finding the Fourth Proportional to 511,736.20, 767,661.90 and 156,747.40

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Solution

The fourth proportional to 511,736.20, 767,661.90 and 156,747.40 is: 235,138.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,736.20 : 767,661.90 = 156,747.40 : x
  2. Step 2: Convert to fraction form
    511,736.20/767,661.90 = 156,747.40/x
  3. Step 3: Cross multiply
    511,736.20x = 767,661.90 × 156,747.40
  4. Step 4: Simplify right side
    511,736.20x = 120,329,006,904.06
  5. Step 5: Solve for x
    x = 120,329,006,904.06/511,736.20
  6. Step 6: Final answer
    x = 235,138.74

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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.