Home / 281,005.40-421,508.10-162,615.80

Finding the Fourth Proportional to 281,005.40, 421,508.10 and 162,615.80

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Solution

The fourth proportional to 281,005.40, 421,508.10 and 162,615.80 is: 243,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,005.40 : 421,508.10 = 162,615.80 : x
  2. Step 2: Convert to fraction form
    281,005.40/421,508.10 = 162,615.80/x
  3. Step 3: Cross multiply
    281,005.40x = 421,508.10 × 162,615.80
  4. Step 4: Simplify right side
    281,005.40x = 68,543,876,887.98
  5. Step 5: Solve for x
    x = 68,543,876,887.98/281,005.40
  6. Step 6: Final answer
    x = 243,923.70

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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.