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Finding the Fourth Proportional to 210,160.41, 315,243.36 and 69,919.03

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Solution

The fourth proportional to 210,160.41, 315,243.36 and 69,919.03 is: 104,879.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,160.41 : 315,243.36 = 69,919.03 : x
  2. Step 2: Convert to fraction form
    210,160.41/315,243.36 = 69,919.03/x
  3. Step 3: Cross multiply
    210,160.41x = 315,243.36 × 69,919.03
  4. Step 4: Simplify right side
    210,160.41x = 22,041,510,339.20
  5. Step 5: Solve for x
    x = 22,041,510,339.20/210,160.41
  6. Step 6: Final answer
    x = 104,879.46

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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.