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Finding the Fourth Proportional to 319,128.75, 478,775.16 and 119,452.01

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Solution

The fourth proportional to 319,128.75, 478,775.16 and 119,452.01 is: 179,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,128.75 : 478,775.16 = 119,452.01 : x
  2. Step 2: Convert to fraction form
    319,128.75/478,775.16 = 119,452.01/x
  3. Step 3: Cross multiply
    319,128.75x = 478,775.16 × 119,452.01
  4. Step 4: Simplify right side
    319,128.75x = 57,190,652,806.20
  5. Step 5: Solve for x
    x = 57,190,652,806.20/319,128.75
  6. Step 6: Final answer
    x = 179,208.71

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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.