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Finding the Fourth Proportional to 254,486.40, 381,885.60 and 104,798.40

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Solution

The fourth proportional to 254,486.40, 381,885.60 and 104,798.40 is: 157,261.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,486.40 : 381,885.60 = 104,798.40 : x
  2. Step 2: Convert to fraction form
    254,486.40/381,885.60 = 104,798.40/x
  3. Step 3: Cross multiply
    254,486.40x = 381,885.60 × 104,798.40
  4. Step 4: Simplify right side
    254,486.40x = 40,020,999,863.04
  5. Step 5: Solve for x
    x = 40,020,999,863.04/254,486.40
  6. Step 6: Final answer
    x = 157,261.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.