Home / 219,905.72-303,488.34-124,430.78

Finding the Fourth Proportional to 219,905.72, 303,488.34 and 124,430.78

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Solution

The fourth proportional to 219,905.72, 303,488.34 and 124,430.78 is: 171,724.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,905.72 : 303,488.34 = 124,430.78 : x
  2. Step 2: Convert to fraction form
    219,905.72/303,488.34 = 124,430.78/x
  3. Step 3: Cross multiply
    219,905.72x = 303,488.34 × 124,430.78
  4. Step 4: Simplify right side
    219,905.72x = 37,763,290,867.11
  5. Step 5: Solve for x
    x = 37,763,290,867.11/219,905.72
  6. Step 6: Final answer
    x = 171,724.91

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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.