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Finding the Fourth Proportional to 613,507.53, 920,310.51 and 214,139.46

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Solution

The fourth proportional to 613,507.53, 920,310.51 and 214,139.46 is: 321,226.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,507.53 : 920,310.51 = 214,139.46 : x
  2. Step 2: Convert to fraction form
    613,507.53/920,310.51 = 214,139.46/x
  3. Step 3: Cross multiply
    613,507.53x = 920,310.51 × 214,139.46
  4. Step 4: Simplify right side
    613,507.53x = 197,074,795,643.73
  5. Step 5: Solve for x
    x = 197,074,795,643.73/613,507.53
  6. Step 6: Final answer
    x = 321,226.37

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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.