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Finding the Fourth Proportional to 210,326.10, 315,489.15 and 163,086.90

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Solution

The fourth proportional to 210,326.10, 315,489.15 and 163,086.90 is: 244,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,326.10 : 315,489.15 = 163,086.90 : x
  2. Step 2: Convert to fraction form
    210,326.10/315,489.15 = 163,086.90/x
  3. Step 3: Cross multiply
    210,326.10x = 315,489.15 × 163,086.90
  4. Step 4: Simplify right side
    210,326.10x = 51,452,147,457.14
  5. Step 5: Solve for x
    x = 51,452,147,457.14/210,326.10
  6. Step 6: Final answer
    x = 244,630.35

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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.