Home / 400,319.85-599,815.47-281,742.08

Finding the Fourth Proportional to 400,319.85, 599,815.47 and 281,742.08

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Solution

The fourth proportional to 400,319.85, 599,815.47 and 281,742.08 is: 422,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,319.85 : 599,815.47 = 281,742.08 : x
  2. Step 2: Convert to fraction form
    400,319.85/599,815.47 = 281,742.08/x
  3. Step 3: Cross multiply
    400,319.85x = 599,815.47 × 281,742.08
  4. Step 4: Simplify right side
    400,319.85x = 168,993,258,440.74
  5. Step 5: Solve for x
    x = 168,993,258,440.74/400,319.85
  6. Step 6: Final answer
    x = 422,145.58

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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.