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Finding the Fourth Proportional to 254,783.41, 351,607.88 and 138,504.70

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Solution

The fourth proportional to 254,783.41, 351,607.88 and 138,504.70 is: 191,140.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,783.41 : 351,607.88 = 138,504.70 : x
  2. Step 2: Convert to fraction form
    254,783.41/351,607.88 = 138,504.70/x
  3. Step 3: Cross multiply
    254,783.41x = 351,607.88 × 138,504.70
  4. Step 4: Simplify right side
    254,783.41x = 48,699,343,937.04
  5. Step 5: Solve for x
    x = 48,699,343,937.04/254,783.41
  6. Step 6: Final answer
    x = 191,140.17

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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.