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Finding the Fourth Proportional to 210,611.52, 315,933.60 and 70,370.64

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Solution

The fourth proportional to 210,611.52, 315,933.60 and 70,370.64 is: 105,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,611.52 : 315,933.60 = 70,370.64 : x
  2. Step 2: Convert to fraction form
    210,611.52/315,933.60 = 70,370.64/x
  3. Step 3: Cross multiply
    210,611.52x = 315,933.60 × 70,370.64
  4. Step 4: Simplify right side
    210,611.52x = 22,232,449,629.50
  5. Step 5: Solve for x
    x = 22,232,449,629.50/210,611.52
  6. Step 6: Final answer
    x = 105,561.41

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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.