Home / 494,743.20-742,041.90-139,793.10

Finding the Fourth Proportional to 494,743.20, 742,041.90 and 139,793.10

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Solution

The fourth proportional to 494,743.20, 742,041.90 and 139,793.10 is: 209,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,743.20 : 742,041.90 = 139,793.10 : x
  2. Step 2: Convert to fraction form
    494,743.20/742,041.90 = 139,793.10/x
  3. Step 3: Cross multiply
    494,743.20x = 742,041.90 × 139,793.10
  4. Step 4: Simplify right side
    494,743.20x = 103,732,337,530.89
  5. Step 5: Solve for x
    x = 103,732,337,530.89/494,743.20
  6. Step 6: Final answer
    x = 209,669.05

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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.