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Finding the Fourth Proportional to 511,969.24, 767,866.34 and 137,904.76

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Solution

The fourth proportional to 511,969.24, 767,866.34 and 137,904.76 is: 206,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,969.24 : 767,866.34 = 137,904.76 : x
  2. Step 2: Convert to fraction form
    511,969.24/767,866.34 = 137,904.76/x
  3. Step 3: Cross multiply
    511,969.24x = 767,866.34 × 137,904.76
  4. Step 4: Simplify right side
    511,969.24x = 105,892,423,329.78
  5. Step 5: Solve for x
    x = 105,892,423,329.78/511,969.24
  6. Step 6: Final answer
    x = 206,833.57

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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.