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Finding the Fourth Proportional to 613,513.53, 920,319.51 and 214,145.46

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Solution

The fourth proportional to 613,513.53, 920,319.51 and 214,145.46 is: 321,235.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,513.53 : 920,319.51 = 214,145.46 : x
  2. Step 2: Convert to fraction form
    613,513.53/920,319.51 = 214,145.46/x
  3. Step 3: Cross multiply
    613,513.53x = 920,319.51 × 214,145.46
  4. Step 4: Simplify right side
    613,513.53x = 197,082,244,815.93
  5. Step 5: Solve for x
    x = 197,082,244,815.93/613,513.53
  6. Step 6: Final answer
    x = 321,235.37

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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.