Home / 210,006.80-315,010.20-115,200.35

Finding the Fourth Proportional to 210,006.80, 315,010.20 and 115,200.35

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Solution

The fourth proportional to 210,006.80, 315,010.20 and 115,200.35 is: 172,800.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006.80 : 315,010.20 = 115,200.35 : x
  2. Step 2: Convert to fraction form
    210,006.80/315,010.20 = 115,200.35/x
  3. Step 3: Cross multiply
    210,006.80x = 315,010.20 × 115,200.35
  4. Step 4: Simplify right side
    210,006.80x = 36,289,285,293.57
  5. Step 5: Solve for x
    x = 36,289,285,293.57/210,006.80
  6. Step 6: Final answer
    x = 172,800.53

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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.