Home / 354,111.48-531,388.08-143,749.35

Finding the Fourth Proportional to 354,111.48, 531,388.08 and 143,749.35

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Solution

The fourth proportional to 354,111.48, 531,388.08 and 143,749.35 is: 215,713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,111.48 : 531,388.08 = 143,749.35 : x
  2. Step 2: Convert to fraction form
    354,111.48/531,388.08 = 143,749.35/x
  3. Step 3: Cross multiply
    354,111.48x = 531,388.08 × 143,749.35
  4. Step 4: Simplify right side
    354,111.48x = 76,386,691,097.75
  5. Step 5: Solve for x
    x = 76,386,691,097.75/354,111.48
  6. Step 6: Final answer
    x = 215,713.68

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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.