Home / 430,200.45-645,300.68-272,606.85

Finding the Fourth Proportional to 430,200.45, 645,300.68 and 272,606.85

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Solution

The fourth proportional to 430,200.45, 645,300.68 and 272,606.85 is: 408,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,200.45 : 645,300.68 = 272,606.85 : x
  2. Step 2: Convert to fraction form
    430,200.45/645,300.68 = 272,606.85/x
  3. Step 3: Cross multiply
    430,200.45x = 645,300.68 × 272,606.85
  4. Step 4: Simplify right side
    430,200.45x = 175,913,384,314.62
  5. Step 5: Solve for x
    x = 175,913,384,314.62/430,200.45
  6. Step 6: Final answer
    x = 408,910.28

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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.