Home / 210,621.10-315,931.65-192,906.40

Finding the Fourth Proportional to 210,621.10, 315,931.65 and 192,906.40

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Solution

The fourth proportional to 210,621.10, 315,931.65 and 192,906.40 is: 289,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,621.10 : 315,931.65 = 192,906.40 : x
  2. Step 2: Convert to fraction form
    210,621.10/315,931.65 = 192,906.40/x
  3. Step 3: Cross multiply
    210,621.10x = 315,931.65 × 192,906.40
  4. Step 4: Simplify right side
    210,621.10x = 60,945,237,247.56
  5. Step 5: Solve for x
    x = 60,945,237,247.56/210,621.10
  6. Step 6: Final answer
    x = 289,359.60

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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.