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Finding the Fourth Proportional to 307,004.78, 458,348.55 and 234,578.65

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Solution

The fourth proportional to 307,004.78, 458,348.55 and 234,578.65 is: 350,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,004.78 : 458,348.55 = 234,578.65 : x
  2. Step 2: Convert to fraction form
    307,004.78/458,348.55 = 234,578.65/x
  3. Step 3: Cross multiply
    307,004.78x = 458,348.55 × 234,578.65
  4. Step 4: Simplify right side
    307,004.78x = 107,518,781,796.72
  5. Step 5: Solve for x
    x = 107,518,781,796.72/307,004.78
  6. Step 6: Final answer
    x = 350,218.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.