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Finding the Fourth Proportional to 613,325, 919,987.50 and 170,093

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Solution

The fourth proportional to 613,325, 919,987.50 and 170,093 is: 255,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,325 : 919,987.50 = 170,093 : x
  2. Step 2: Convert to fraction form
    613,325/919,987.50 = 170,093/x
  3. Step 3: Cross multiply
    613,325x = 919,987.50 × 170,093
  4. Step 4: Simplify right side
    613,325x = 156,483,433,837.50
  5. Step 5: Solve for x
    x = 156,483,433,837.50/613,325
  6. Step 6: Final answer
    x = 255,139.50

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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.