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Finding the Fourth Proportional to 335,420.35, 502,780.51 and 135,878.47

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Solution

The fourth proportional to 335,420.35, 502,780.51 and 135,878.47 is: 203,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,420.35 : 502,780.51 = 135,878.47 : x
  2. Step 2: Convert to fraction form
    335,420.35/502,780.51 = 135,878.47/x
  3. Step 3: Cross multiply
    335,420.35x = 502,780.51 × 135,878.47
  4. Step 4: Simplify right side
    335,420.35x = 68,317,046,444.62
  5. Step 5: Solve for x
    x = 68,317,046,444.62/335,420.35
  6. Step 6: Final answer
    x = 203,675.91

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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.