Home / 280,654.04-420,788.88-100,735.48

Finding the Fourth Proportional to 280,654.04, 420,788.88 and 100,735.48

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Solution

The fourth proportional to 280,654.04, 420,788.88 and 100,735.48 is: 151,034.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,654.04 : 420,788.88 = 100,735.48 : x
  2. Step 2: Convert to fraction form
    280,654.04/420,788.88 = 100,735.48/x
  3. Step 3: Cross multiply
    280,654.04x = 420,788.88 × 100,735.48
  4. Step 4: Simplify right side
    280,654.04x = 42,388,369,805.46
  5. Step 5: Solve for x
    x = 42,388,369,805.46/280,654.04
  6. Step 6: Final answer
    x = 151,034.24

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1.5x scale

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.