Home / 421,163.52-631,749.12-154,928.64

Finding the Fourth Proportional to 421,163.52, 631,749.12 and 154,928.64

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Solution

The fourth proportional to 421,163.52, 631,749.12 and 154,928.64 is: 232,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,163.52 : 631,749.12 = 154,928.64 : x
  2. Step 2: Convert to fraction form
    421,163.52/631,749.12 = 154,928.64/x
  3. Step 3: Cross multiply
    421,163.52x = 631,749.12 × 154,928.64
  4. Step 4: Simplify right side
    421,163.52x = 97,876,031,982.80
  5. Step 5: Solve for x
    x = 97,876,031,982.80/421,163.52
  6. Step 6: Final answer
    x = 232,394.37

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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.