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Finding the Fourth Proportional to 264,902.40, 397,319.72 and 87,365.39

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Solution

The fourth proportional to 264,902.40, 397,319.72 and 87,365.39 is: 131,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,902.40 : 397,319.72 = 87,365.39 : x
  2. Step 2: Convert to fraction form
    264,902.40/397,319.72 = 87,365.39/x
  3. Step 3: Cross multiply
    264,902.40x = 397,319.72 × 87,365.39
  4. Step 4: Simplify right side
    264,902.40x = 34,711,989,869.07
  5. Step 5: Solve for x
    x = 34,711,989,869.07/264,902.40
  6. Step 6: Final answer
    x = 131,036.90

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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.