Home / 228,975.39-315,779.17-142,942.35

Finding the Fourth Proportional to 228,975.39, 315,779.17 and 142,942.35

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Solution

The fourth proportional to 228,975.39, 315,779.17 and 142,942.35 is: 197,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,975.39 : 315,779.17 = 142,942.35 : x
  2. Step 2: Convert to fraction form
    228,975.39/315,779.17 = 142,942.35/x
  3. Step 3: Cross multiply
    228,975.39x = 315,779.17 × 142,942.35
  4. Step 4: Simplify right side
    228,975.39x = 45,138,216,640.85
  5. Step 5: Solve for x
    x = 45,138,216,640.85/228,975.39
  6. Step 6: Final answer
    x = 197,131.30

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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.