Home / 438,436.80-657,327.15-238,982.40

Finding the Fourth Proportional to 438,436.80, 657,327.15 and 238,982.40

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Solution

The fourth proportional to 438,436.80, 657,327.15 and 238,982.40 is: 358,294.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,436.80 : 657,327.15 = 238,982.40 : x
  2. Step 2: Convert to fraction form
    438,436.80/657,327.15 = 238,982.40/x
  3. Step 3: Cross multiply
    438,436.80x = 657,327.15 × 238,982.40
  4. Step 4: Simplify right side
    438,436.80x = 157,089,619,892.16
  5. Step 5: Solve for x
    x = 157,089,619,892.16/438,436.80
  6. Step 6: Final answer
    x = 358,294.79

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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.