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Finding the Fourth Proportional to 493,619.20, 740,428.82 and 119,642.20

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Solution

The fourth proportional to 493,619.20, 740,428.82 and 119,642.20 is: 179,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,619.20 : 740,428.82 = 119,642.20 : x
  2. Step 2: Convert to fraction form
    493,619.20/740,428.82 = 119,642.20/x
  3. Step 3: Cross multiply
    493,619.20x = 740,428.82 × 119,642.20
  4. Step 4: Simplify right side
    493,619.20x = 88,586,532,968.20
  5. Step 5: Solve for x
    x = 88,586,532,968.20/493,619.20
  6. Step 6: Final answer
    x = 179,463.30

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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.