Home / 280,265.36-420,273-102,648.56

Finding the Fourth Proportional to 280,265.36, 420,273 and 102,648.56

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Solution

The fourth proportional to 280,265.36, 420,273 and 102,648.56 is: 153,927.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,265.36 : 420,273 = 102,648.56 : x
  2. Step 2: Convert to fraction form
    280,265.36/420,273 = 102,648.56/x
  3. Step 3: Cross multiply
    280,265.36x = 420,273 × 102,648.56
  4. Step 4: Simplify right side
    280,265.36x = 43,140,418,256.88
  5. Step 5: Solve for x
    x = 43,140,418,256.88/280,265.36
  6. Step 6: Final answer
    x = 153,927.04

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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.