Home / 438,101.15-657,175.64-138,559.37

Finding the Fourth Proportional to 438,101.15, 657,175.64 and 138,559.37

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Solution

The fourth proportional to 438,101.15, 657,175.64 and 138,559.37 is: 207,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,101.15 : 657,175.64 = 138,559.37 : x
  2. Step 2: Convert to fraction form
    438,101.15/657,175.64 = 138,559.37/x
  3. Step 3: Cross multiply
    438,101.15x = 657,175.64 × 138,559.37
  4. Step 4: Simplify right side
    438,101.15x = 91,057,838,679.07
  5. Step 5: Solve for x
    x = 91,057,838,679.07/438,101.15
  6. Step 6: Final answer
    x = 207,846.61

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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.