Home / 430,156.20-645,234.30-272,562.60

Finding the Fourth Proportional to 430,156.20, 645,234.30 and 272,562.60

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Solution

The fourth proportional to 430,156.20, 645,234.30 and 272,562.60 is: 408,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,156.20 : 645,234.30 = 272,562.60 : x
  2. Step 2: Convert to fraction form
    430,156.20/645,234.30 = 272,562.60/x
  3. Step 3: Cross multiply
    430,156.20x = 645,234.30 × 272,562.60
  4. Step 4: Simplify right side
    430,156.20x = 175,866,738,417.18
  5. Step 5: Solve for x
    x = 175,866,738,417.18/430,156.20
  6. Step 6: Final answer
    x = 408,843.90

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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.