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Finding the Fourth Proportional to 265,551.12, 398,397.76 and 115,803.59

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Solution

The fourth proportional to 265,551.12, 398,397.76 and 115,803.59 is: 173,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,551.12 : 398,397.76 = 115,803.59 : x
  2. Step 2: Convert to fraction form
    265,551.12/398,397.76 = 115,803.59/x
  3. Step 3: Cross multiply
    265,551.12x = 398,397.76 × 115,803.59
  4. Step 4: Simplify right side
    265,551.12x = 46,135,888,574.46
  5. Step 5: Solve for x
    x = 46,135,888,574.46/265,551.12
  6. Step 6: Final answer
    x = 173,736.37

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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.