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Finding the Fourth Proportional to 519,912.52, 779,868.80 and 187,488.52

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Solution

The fourth proportional to 519,912.52, 779,868.80 and 187,488.52 is: 281,232.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,912.52 : 779,868.80 = 187,488.52 : x
  2. Step 2: Convert to fraction form
    519,912.52/779,868.80 = 187,488.52/x
  3. Step 3: Cross multiply
    519,912.52x = 779,868.80 × 187,488.52
  4. Step 4: Simplify right side
    519,912.52x = 146,216,447,106.18
  5. Step 5: Solve for x
    x = 146,216,447,106.18/519,912.52
  6. Step 6: Final answer
    x = 281,232.79

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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.