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Finding the Fourth Proportional to 613,254.26, 920,034.48 and 213,900.78

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Solution

The fourth proportional to 613,254.26, 920,034.48 and 213,900.78 is: 320,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,254.26 : 920,034.48 = 213,900.78 : x
  2. Step 2: Convert to fraction form
    613,254.26/920,034.48 = 213,900.78/x
  3. Step 3: Cross multiply
    613,254.26x = 920,034.48 × 213,900.78
  4. Step 4: Simplify right side
    613,254.26x = 196,796,092,898.89
  5. Step 5: Solve for x
    x = 196,796,092,898.89/613,254.26
  6. Step 6: Final answer
    x = 320,904.57

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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.