Home / 210,346.80-315,520.20-193,143.60

Finding the Fourth Proportional to 210,346.80, 315,520.20 and 193,143.60

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Solution

The fourth proportional to 210,346.80, 315,520.20 and 193,143.60 is: 289,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,346.80 : 315,520.20 = 193,143.60 : x
  2. Step 2: Convert to fraction form
    210,346.80/315,520.20 = 193,143.60/x
  3. Step 3: Cross multiply
    210,346.80x = 315,520.20 × 193,143.60
  4. Step 4: Simplify right side
    210,346.80x = 60,940,707,300.72
  5. Step 5: Solve for x
    x = 60,940,707,300.72/210,346.80
  6. Step 6: Final answer
    x = 289,715.40

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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.