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Finding the Fourth Proportional to 281,056.60, 421,779.30 and 202,227.40

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Solution

The fourth proportional to 281,056.60, 421,779.30 and 202,227.40 is: 303,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,056.60 : 421,779.30 = 202,227.40 : x
  2. Step 2: Convert to fraction form
    281,056.60/421,779.30 = 202,227.40/x
  3. Step 3: Cross multiply
    281,056.60x = 421,779.30 × 202,227.40
  4. Step 4: Simplify right side
    281,056.60x = 85,295,331,212.82
  5. Step 5: Solve for x
    x = 85,295,331,212.82/281,056.60
  6. Step 6: Final answer
    x = 303,480.98

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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.