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Finding the Fourth Proportional to 265,880.81, 398,488.60 and 132,798.21

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Solution

The fourth proportional to 265,880.81, 398,488.60 and 132,798.21 is: 199,031.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,880.81 : 398,488.60 = 132,798.21 : x
  2. Step 2: Convert to fraction form
    265,880.81/398,488.60 = 132,798.21/x
  3. Step 3: Cross multiply
    265,880.81x = 398,488.60 × 132,798.21
  4. Step 4: Simplify right side
    265,880.81x = 52,918,572,453.41
  5. Step 5: Solve for x
    x = 52,918,572,453.41/265,880.81
  6. Step 6: Final answer
    x = 199,031.19

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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.