Home / 438,226.66-657,438.45-138,725.20

Finding the Fourth Proportional to 438,226.66, 657,438.45 and 138,725.20

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Solution

The fourth proportional to 438,226.66, 657,438.45 and 138,725.20 is: 208,118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,226.66 : 657,438.45 = 138,725.20 : x
  2. Step 2: Convert to fraction form
    438,226.66/657,438.45 = 138,725.20/x
  3. Step 3: Cross multiply
    438,226.66x = 657,438.45 × 138,725.20
  4. Step 4: Simplify right side
    438,226.66x = 91,203,280,463.94
  5. Step 5: Solve for x
    x = 91,203,280,463.94/438,226.66
  6. Step 6: Final answer
    x = 208,118.97

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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.