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Finding the Fourth Proportional to 265,041.74, 397,478.37 and 87,515.66

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Solution

The fourth proportional to 265,041.74, 397,478.37 and 87,515.66 is: 131,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,041.74 : 397,478.37 = 87,515.66 : x
  2. Step 2: Convert to fraction form
    265,041.74/397,478.37 = 87,515.66/x
  3. Step 3: Cross multiply
    265,041.74x = 397,478.37 × 87,515.66
  4. Step 4: Simplify right side
    265,041.74x = 34,785,581,886.27
  5. Step 5: Solve for x
    x = 34,785,581,886.27/265,041.74
  6. Step 6: Final answer
    x = 131,245.67

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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.