Home / 281,015.04-387,345.60-219,654.30

Finding the Fourth Proportional to 281,015.04, 387,345.60 and 219,654.30

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Solution

The fourth proportional to 281,015.04, 387,345.60 and 219,654.30 is: 302,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,015.04 : 387,345.60 = 219,654.30 : x
  2. Step 2: Convert to fraction form
    281,015.04/387,345.60 = 219,654.30/x
  3. Step 3: Cross multiply
    281,015.04x = 387,345.60 × 219,654.30
  4. Step 4: Simplify right side
    281,015.04x = 85,082,126,626.08
  5. Step 5: Solve for x
    x = 85,082,126,626.08/281,015.04
  6. Step 6: Final answer
    x = 302,767.16

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1.5x scale

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.