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Finding the Fourth Proportional to 254,990.96, 351,880.44 and 138,700.58

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Solution

The fourth proportional to 254,990.96, 351,880.44 and 138,700.58 is: 191,402.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,990.96 : 351,880.44 = 138,700.58 : x
  2. Step 2: Convert to fraction form
    254,990.96/351,880.44 = 138,700.58/x
  3. Step 3: Cross multiply
    254,990.96x = 351,880.44 × 138,700.58
  4. Step 4: Simplify right side
    254,990.96x = 48,806,019,359.25
  5. Step 5: Solve for x
    x = 48,806,019,359.25/254,990.96
  6. Step 6: Final answer
    x = 191,402.94

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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.