Home / 318,060-438,460.24-222,269.28

Finding the Fourth Proportional to 318,060, 438,460.24 and 222,269.28

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Solution

The fourth proportional to 318,060, 438,460.24 and 222,269.28 is: 306,408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,060 : 438,460.24 = 222,269.28 : x
  2. Step 2: Convert to fraction form
    318,060/438,460.24 = 222,269.28/x
  3. Step 3: Cross multiply
    318,060x = 438,460.24 × 222,269.28
  4. Step 4: Simplify right side
    318,060x = 97,456,241,853.43
  5. Step 5: Solve for x
    x = 97,456,241,853.43/318,060
  6. Step 6: Final answer
    x = 306,408.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.