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Finding the Fourth Proportional to 613,750.62, 920,628.33 and 214,389.78

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Solution

The fourth proportional to 613,750.62, 920,628.33 and 214,389.78 is: 321,585.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,750.62 : 920,628.33 = 214,389.78 : x
  2. Step 2: Convert to fraction form
    613,750.62/920,628.33 = 214,389.78/x
  3. Step 3: Cross multiply
    613,750.62x = 920,628.33 × 214,389.78
  4. Step 4: Simplify right side
    613,750.62x = 197,373,305,130.47
  5. Step 5: Solve for x
    x = 197,373,305,130.47/613,750.62
  6. Step 6: Final answer
    x = 321,585.51

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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.