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Finding the Fourth Proportional to 438,372.74, 657,554.54 and 138,853.22

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Solution

The fourth proportional to 438,372.74, 657,554.54 and 138,853.22 is: 208,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,372.74 : 657,554.54 = 138,853.22 : x
  2. Step 2: Convert to fraction form
    438,372.74/657,554.54 = 138,853.22/x
  3. Step 3: Cross multiply
    438,372.74x = 657,554.54 × 138,853.22
  4. Step 4: Simplify right side
    438,372.74x = 91,303,565,204.62
  5. Step 5: Solve for x
    x = 91,303,565,204.62/438,372.74
  6. Step 6: Final answer
    x = 208,278.38

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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.