Home / 438,226.59-657,438.35-138,725.15

Finding the Fourth Proportional to 438,226.59, 657,438.35 and 138,725.15

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Solution

The fourth proportional to 438,226.59, 657,438.35 and 138,725.15 is: 208,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,226.59 : 657,438.35 = 138,725.15 : x
  2. Step 2: Convert to fraction form
    438,226.59/657,438.35 = 138,725.15/x
  3. Step 3: Cross multiply
    438,226.59x = 657,438.35 × 138,725.15
  4. Step 4: Simplify right side
    438,226.59x = 91,203,229,738.69
  5. Step 5: Solve for x
    x = 91,203,229,738.69/438,226.59
  6. Step 6: Final answer
    x = 208,118.89

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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.