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Finding the Fourth Proportional to 210,375.54, 315,566.10 and 70,134.21

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Solution

The fourth proportional to 210,375.54, 315,566.10 and 70,134.21 is: 105,202.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,375.54 : 315,566.10 = 70,134.21 : x
  2. Step 2: Convert to fraction form
    210,375.54/315,566.10 = 70,134.21/x
  3. Step 3: Cross multiply
    210,375.54x = 315,566.10 × 70,134.21
  4. Step 4: Simplify right side
    210,375.54x = 22,131,979,126.28
  5. Step 5: Solve for x
    x = 22,131,979,126.28/210,375.54
  6. Step 6: Final answer
    x = 105,202.25

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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.