Home / 424,210.30-636,180.21-139,847.85

Finding the Fourth Proportional to 424,210.30, 636,180.21 and 139,847.85

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Solution

The fourth proportional to 424,210.30, 636,180.21 and 139,847.85 is: 209,727.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,210.30 : 636,180.21 = 139,847.85 : x
  2. Step 2: Convert to fraction form
    424,210.30/636,180.21 = 139,847.85/x
  3. Step 3: Cross multiply
    424,210.30x = 636,180.21 × 139,847.85
  4. Step 4: Simplify right side
    424,210.30x = 88,968,434,581.05
  5. Step 5: Solve for x
    x = 88,968,434,581.05/424,210.30
  6. Step 6: Final answer
    x = 209,727.19

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1.5x scale

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.