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Finding the Fourth Proportional to 242,390.45, 363,355.64 and 84,576.53

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Solution

The fourth proportional to 242,390.45, 363,355.64 and 84,576.53 is: 126,784.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,390.45 : 363,355.64 = 84,576.53 : x
  2. Step 2: Convert to fraction form
    242,390.45/363,355.64 = 84,576.53/x
  3. Step 3: Cross multiply
    242,390.45x = 363,355.64 × 84,576.53
  4. Step 4: Simplify right side
    242,390.45x = 30,731,358,764.25
  5. Step 5: Solve for x
    x = 30,731,358,764.25/242,390.45
  6. Step 6: Final answer
    x = 126,784.53

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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.