Home / 485,022.60-669,280.05-281,137.50

Finding the Fourth Proportional to 485,022.60, 669,280.05 and 281,137.50

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Solution

The fourth proportional to 485,022.60, 669,280.05 and 281,137.50 is: 387,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,022.60 : 669,280.05 = 281,137.50 : x
  2. Step 2: Convert to fraction form
    485,022.60/669,280.05 = 281,137.50/x
  3. Step 3: Cross multiply
    485,022.60x = 669,280.05 × 281,137.50
  4. Step 4: Simplify right side
    485,022.60x = 188,159,720,056.88
  5. Step 5: Solve for x
    x = 188,159,720,056.88/485,022.60
  6. Step 6: Final answer
    x = 387,940.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.