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Finding the Fourth Proportional to 210,319.01, 315,216.07 and 105,168.05

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Solution

The fourth proportional to 210,319.01, 315,216.07 and 105,168.05 is: 157,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,319.01 : 315,216.07 = 105,168.05 : x
  2. Step 2: Convert to fraction form
    210,319.01/315,216.07 = 105,168.05/x
  3. Step 3: Cross multiply
    210,319.01x = 315,216.07 × 105,168.05
  4. Step 4: Simplify right side
    210,319.01x = 33,150,657,571.56
  5. Step 5: Solve for x
    x = 33,150,657,571.56/210,319.01
  6. Step 6: Final answer
    x = 157,620.84

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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.