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Finding the Fourth Proportional to 287,751.20, 430,849.20 and 225,543.20

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Solution

The fourth proportional to 287,751.20, 430,849.20 and 225,543.20 is: 337,705.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,751.20 : 430,849.20 = 225,543.20 : x
  2. Step 2: Convert to fraction form
    287,751.20/430,849.20 = 225,543.20/x
  3. Step 3: Cross multiply
    287,751.20x = 430,849.20 × 225,543.20
  4. Step 4: Simplify right side
    287,751.20x = 97,175,107,285.44
  5. Step 5: Solve for x
    x = 97,175,107,285.44/287,751.20
  6. Step 6: Final answer
    x = 337,705.31

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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.