Home / 281,781.20-423,047.10-163,537.40

Finding the Fourth Proportional to 281,781.20, 423,047.10 and 163,537.40

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Solution

The fourth proportional to 281,781.20, 423,047.10 and 163,537.40 is: 245,523.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,781.20 : 423,047.10 = 163,537.40 : x
  2. Step 2: Convert to fraction form
    281,781.20/423,047.10 = 163,537.40/x
  3. Step 3: Cross multiply
    281,781.20x = 423,047.10 × 163,537.40
  4. Step 4: Simplify right side
    281,781.20x = 69,184,022,811.54
  5. Step 5: Solve for x
    x = 69,184,022,811.54/281,781.20
  6. Step 6: Final answer
    x = 245,523.91

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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.