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Finding the Fourth Proportional to 291,908.61, 438,035.85 and 123,419.70

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Solution

The fourth proportional to 291,908.61, 438,035.85 and 123,419.70 is: 185,202.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,908.61 : 438,035.85 = 123,419.70 : x
  2. Step 2: Convert to fraction form
    291,908.61/438,035.85 = 123,419.70/x
  3. Step 3: Cross multiply
    291,908.61x = 438,035.85 × 123,419.70
  4. Step 4: Simplify right side
    291,908.61x = 54,062,253,196.25
  5. Step 5: Solve for x
    x = 54,062,253,196.25/291,908.61
  6. Step 6: Final answer
    x = 185,202.67

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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.