Home / 254,427.10-381,640.65-76,915.60

Finding the Fourth Proportional to 254,427.10, 381,640.65 and 76,915.60

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Solution

The fourth proportional to 254,427.10, 381,640.65 and 76,915.60 is: 115,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,427.10 : 381,640.65 = 76,915.60 : x
  2. Step 2: Convert to fraction form
    254,427.10/381,640.65 = 76,915.60/x
  3. Step 3: Cross multiply
    254,427.10x = 381,640.65 × 76,915.60
  4. Step 4: Simplify right side
    254,427.10x = 29,354,119,579.14
  5. Step 5: Solve for x
    x = 29,354,119,579.14/254,427.10
  6. Step 6: Final answer
    x = 115,373.40

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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.