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Finding the Fourth Proportional to 519,907.58, 779,858.91 and 140,827.58

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Solution

The fourth proportional to 519,907.58, 779,858.91 and 140,827.58 is: 211,240.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,907.58 : 779,858.91 = 140,827.58 : x
  2. Step 2: Convert to fraction form
    519,907.58/779,858.91 = 140,827.58/x
  3. Step 3: Cross multiply
    519,907.58x = 779,858.91 × 140,827.58
  4. Step 4: Simplify right side
    519,907.58x = 109,825,643,036.74
  5. Step 5: Solve for x
    x = 109,825,643,036.74/519,907.58
  6. Step 6: Final answer
    x = 211,240.70

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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.