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Finding the Fourth Proportional to 287,732.20, 430,820.70 and 225,524.20

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Solution

The fourth proportional to 287,732.20, 430,820.70 and 225,524.20 is: 337,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,732.20 : 430,820.70 = 225,524.20 : x
  2. Step 2: Convert to fraction form
    287,732.20/430,820.70 = 225,524.20/x
  3. Step 3: Cross multiply
    287,732.20x = 430,820.70 × 225,524.20
  4. Step 4: Simplify right side
    287,732.20x = 97,160,493,710.94
  5. Step 5: Solve for x
    x = 97,160,493,710.94/287,732.20
  6. Step 6: Final answer
    x = 337,676.82

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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.