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Finding the Fourth Proportional to 275,392.51, 380,055.49 and 172,089.11

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Solution

The fourth proportional to 275,392.51, 380,055.49 and 172,089.11 is: 237,491.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,392.51 : 380,055.49 = 172,089.11 : x
  2. Step 2: Convert to fraction form
    275,392.51/380,055.49 = 172,089.11/x
  3. Step 3: Cross multiply
    275,392.51x = 380,055.49 × 172,089.11
  4. Step 4: Simplify right side
    275,392.51x = 65,403,410,374.82
  5. Step 5: Solve for x
    x = 65,403,410,374.82/275,392.51
  6. Step 6: Final answer
    x = 237,491.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.