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Finding the Fourth Proportional to 210,320.10, 315,480.15 and 189,324.90

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Solution

The fourth proportional to 210,320.10, 315,480.15 and 189,324.90 is: 283,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,320.10 : 315,480.15 = 189,324.90 : x
  2. Step 2: Convert to fraction form
    210,320.10/315,480.15 = 189,324.90/x
  3. Step 3: Cross multiply
    210,320.10x = 315,480.15 × 189,324.90
  4. Step 4: Simplify right side
    210,320.10x = 59,728,247,850.74
  5. Step 5: Solve for x
    x = 59,728,247,850.74/210,320.10
  6. Step 6: Final answer
    x = 283,987.35

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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.