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Finding the Fourth Proportional to 265,809.66, 398,715.96 and 66,130.04

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Solution

The fourth proportional to 265,809.66, 398,715.96 and 66,130.04 is: 99,195.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,809.66 : 398,715.96 = 66,130.04 : x
  2. Step 2: Convert to fraction form
    265,809.66/398,715.96 = 66,130.04/x
  3. Step 3: Cross multiply
    265,809.66x = 398,715.96 × 66,130.04
  4. Step 4: Simplify right side
    265,809.66x = 26,367,102,383.44
  5. Step 5: Solve for x
    x = 26,367,102,383.44/265,809.66
  6. Step 6: Final answer
    x = 99,195.43

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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.