Home / 210,431.13-315,772.46-77,324.85

Finding the Fourth Proportional to 210,431.13, 315,772.46 and 77,324.85

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Solution

The fourth proportional to 210,431.13, 315,772.46 and 77,324.85 is: 116,033.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,431.13 : 315,772.46 = 77,324.85 : x
  2. Step 2: Convert to fraction form
    210,431.13/315,772.46 = 77,324.85/x
  3. Step 3: Cross multiply
    210,431.13x = 315,772.46 × 77,324.85
  4. Step 4: Simplify right side
    210,431.13x = 24,417,056,524.77
  5. Step 5: Solve for x
    x = 24,417,056,524.77/210,431.13
  6. Step 6: Final answer
    x = 116,033.48

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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.