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Finding the Fourth Proportional to 253,009, 349,147.74 and 139,829.32

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Solution

The fourth proportional to 253,009, 349,147.74 and 139,829.32 is: 192,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,009 : 349,147.74 = 139,829.32 : x
  2. Step 2: Convert to fraction form
    253,009/349,147.74 = 139,829.32/x
  3. Step 3: Cross multiply
    253,009x = 349,147.74 × 139,829.32
  4. Step 4: Simplify right side
    253,009x = 48,821,091,063.74
  5. Step 5: Solve for x
    x = 48,821,091,063.74/253,009
  6. Step 6: Final answer
    x = 192,961.88

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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.