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Finding the Fourth Proportional to 248,010.30, 342,238.91 and 139,108.64

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Solution

The fourth proportional to 248,010.30, 342,238.91 and 139,108.64 is: 191,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,010.30 : 342,238.91 = 139,108.64 : x
  2. Step 2: Convert to fraction form
    248,010.30/342,238.91 = 139,108.64/x
  3. Step 3: Cross multiply
    248,010.30x = 342,238.91 × 139,108.64
  4. Step 4: Simplify right side
    248,010.30x = 47,608,386,918.44
  5. Step 5: Solve for x
    x = 47,608,386,918.44/248,010.30
  6. Step 6: Final answer
    x = 191,961.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.