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Finding the Fourth Proportional to 319,224.48, 440,614.72 and 188,516.80

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Solution

The fourth proportional to 319,224.48, 440,614.72 and 188,516.80 is: 260,203.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,224.48 : 440,614.72 = 188,516.80 : x
  2. Step 2: Convert to fraction form
    319,224.48/440,614.72 = 188,516.80/x
  3. Step 3: Cross multiply
    319,224.48x = 440,614.72 × 188,516.80
  4. Step 4: Simplify right side
    319,224.48x = 83,063,277,047.30
  5. Step 5: Solve for x
    x = 83,063,277,047.30/319,224.48
  6. Step 6: Final answer
    x = 260,203.34

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1.5x scale

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.