Home / 454,964.70-682,479.45-139,421.10

Finding the Fourth Proportional to 454,964.70, 682,479.45 and 139,421.10

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Solution

The fourth proportional to 454,964.70, 682,479.45 and 139,421.10 is: 209,141.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,964.70 : 682,479.45 = 139,421.10 : x
  2. Step 2: Convert to fraction form
    454,964.70/682,479.45 = 139,421.10/x
  3. Step 3: Cross multiply
    454,964.70x = 682,479.45 × 139,421.10
  4. Step 4: Simplify right side
    454,964.70x = 95,152,035,646.40
  5. Step 5: Solve for x
    x = 95,152,035,646.40/454,964.70
  6. Step 6: Final answer
    x = 209,141.58

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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.