Home / 281,129.20-421,765.80-162,588.40

Finding the Fourth Proportional to 281,129.20, 421,765.80 and 162,588.40

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Solution

The fourth proportional to 281,129.20, 421,765.80 and 162,588.40 is: 243,924.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,129.20 : 421,765.80 = 162,588.40 : x
  2. Step 2: Convert to fraction form
    281,129.20/421,765.80 = 162,588.40/x
  3. Step 3: Cross multiply
    281,129.20x = 421,765.80 × 162,588.40
  4. Step 4: Simplify right side
    281,129.20x = 68,574,226,596.72
  5. Step 5: Solve for x
    x = 68,574,226,596.72/281,129.20
  6. Step 6: Final answer
    x = 243,924.24

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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.