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Finding the Fourth Proportional to 328,287.24, 492,483.56 and 138,749.48

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Solution

The fourth proportional to 328,287.24, 492,483.56 and 138,749.48 is: 208,146.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,287.24 : 492,483.56 = 138,749.48 : x
  2. Step 2: Convert to fraction form
    328,287.24/492,483.56 = 138,749.48/x
  3. Step 3: Cross multiply
    328,287.24x = 492,483.56 × 138,749.48
  4. Step 4: Simplify right side
    328,287.24x = 68,331,837,858.55
  5. Step 5: Solve for x
    x = 68,331,837,858.55/328,287.24
  6. Step 6: Final answer
    x = 208,146.49

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1.5x scale

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.