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Finding the Fourth Proportional to 210,634.72, 315,952.10 and 70,393.34

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Solution

The fourth proportional to 210,634.72, 315,952.10 and 70,393.34 is: 105,590.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,634.72 : 315,952.10 = 70,393.34 : x
  2. Step 2: Convert to fraction form
    210,634.72/315,952.10 = 70,393.34/x
  3. Step 3: Cross multiply
    210,634.72x = 315,952.10 × 70,393.34
  4. Step 4: Simplify right side
    210,634.72x = 22,240,923,599.01
  5. Step 5: Solve for x
    x = 22,240,923,599.01/210,634.72
  6. Step 6: Final answer
    x = 105,590.02

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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.