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Finding the Fourth Proportional to 264,909.91, 397,378.60 and 87,430.76

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Solution

The fourth proportional to 264,909.91, 397,378.60 and 87,430.76 is: 131,150.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,909.91 : 397,378.60 = 87,430.76 : x
  2. Step 2: Convert to fraction form
    264,909.91/397,378.60 = 87,430.76/x
  3. Step 3: Cross multiply
    264,909.91x = 397,378.60 × 87,430.76
  4. Step 4: Simplify right side
    264,909.91x = 34,743,113,005.74
  5. Step 5: Solve for x
    x = 34,743,113,005.74/264,909.91
  6. Step 6: Final answer
    x = 131,150.67

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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.