Home / 228,645.20-315,541.80-137,999.72

Finding the Fourth Proportional to 228,645.20, 315,541.80 and 137,999.72

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Solution

The fourth proportional to 228,645.20, 315,541.80 and 137,999.72 is: 190,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,645.20 : 315,541.80 = 137,999.72 : x
  2. Step 2: Convert to fraction form
    228,645.20/315,541.80 = 137,999.72/x
  3. Step 3: Cross multiply
    228,645.20x = 315,541.80 × 137,999.72
  4. Step 4: Simplify right side
    228,645.20x = 43,544,680,048.30
  5. Step 5: Solve for x
    x = 43,544,680,048.30/228,645.20
  6. Step 6: Final answer
    x = 190,446.51

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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.