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Finding the Fourth Proportional to 210,632.72, 315,949.10 and 70,391.34

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Solution

The fourth proportional to 210,632.72, 315,949.10 and 70,391.34 is: 105,587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,632.72 : 315,949.10 = 70,391.34 : x
  2. Step 2: Convert to fraction form
    210,632.72/315,949.10 = 70,391.34/x
  3. Step 3: Cross multiply
    210,632.72x = 315,949.10 × 70,391.34
  4. Step 4: Simplify right side
    210,632.72x = 22,240,080,168.84
  5. Step 5: Solve for x
    x = 22,240,080,168.84/210,632.72
  6. Step 6: Final answer
    x = 105,587.02

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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.