Home / 198,319.48-297,479.58-139,418.68

Finding the Fourth Proportional to 198,319.48, 297,479.58 and 139,418.68

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Solution

The fourth proportional to 198,319.48, 297,479.58 and 139,418.68 is: 209,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,319.48 : 297,479.58 = 139,418.68 : x
  2. Step 2: Convert to fraction form
    198,319.48/297,479.58 = 139,418.68/x
  3. Step 3: Cross multiply
    198,319.48x = 297,479.58 × 139,418.68
  4. Step 4: Simplify right side
    198,319.48x = 41,474,210,370.55
  5. Step 5: Solve for x
    x = 41,474,210,370.55/198,319.48
  6. Step 6: Final answer
    x = 209,128.27

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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.