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Finding the Fourth Proportional to 228,449.80, 315,454.26 and 143,594.20

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Solution

The fourth proportional to 228,449.80, 315,454.26 and 143,594.20 is: 198,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,449.80 : 315,454.26 = 143,594.20 : x
  2. Step 2: Convert to fraction form
    228,449.80/315,454.26 = 143,594.20/x
  3. Step 3: Cross multiply
    228,449.80x = 315,454.26 × 143,594.20
  4. Step 4: Simplify right side
    228,449.80x = 45,297,402,101.29
  5. Step 5: Solve for x
    x = 45,297,402,101.29/228,449.80
  6. Step 6: Final answer
    x = 198,281.64

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1.5x scale

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.