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Finding the Fourth Proportional to 281,140.10, 421,904.55 and 202,310.90

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Solution

The fourth proportional to 281,140.10, 421,904.55 and 202,310.90 is: 303,606.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,140.10 : 421,904.55 = 202,310.90 : x
  2. Step 2: Convert to fraction form
    281,140.10/421,904.55 = 202,310.90/x
  3. Step 3: Cross multiply
    281,140.10x = 421,904.55 × 202,310.90
  4. Step 4: Simplify right side
    281,140.10x = 85,355,889,224.60
  5. Step 5: Solve for x
    x = 85,355,889,224.60/281,140.10
  6. Step 6: Final answer
    x = 303,606.24

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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.