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Finding the Fourth Proportional to 253,418.76, 349,718.31 and 140,241.51

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Solution

The fourth proportional to 253,418.76, 349,718.31 and 140,241.51 is: 193,533.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,418.76 : 349,718.31 = 140,241.51 : x
  2. Step 2: Convert to fraction form
    253,418.76/349,718.31 = 140,241.51/x
  3. Step 3: Cross multiply
    253,418.76x = 349,718.31 × 140,241.51
  4. Step 4: Simplify right side
    253,418.76x = 49,045,023,869.05
  5. Step 5: Solve for x
    x = 49,045,023,869.05/253,418.76
  6. Step 6: Final answer
    x = 193,533.52

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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.