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Finding the Fourth Proportional to 339,878.92, 509,886.44 and 190,331.88

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Solution

The fourth proportional to 339,878.92, 509,886.44 and 190,331.88 is: 285,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,878.92 : 509,886.44 = 190,331.88 : x
  2. Step 2: Convert to fraction form
    339,878.92/509,886.44 = 190,331.88/x
  3. Step 3: Cross multiply
    339,878.92x = 509,886.44 × 190,331.88
  4. Step 4: Simplify right side
    339,878.92x = 97,047,644,711.71
  5. Step 5: Solve for x
    x = 97,047,644,711.71/339,878.92
  6. Step 6: Final answer
    x = 285,535.93

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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.