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Finding the Fourth Proportional to 210,955.37, 316,452.28 and 68,764.15

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Solution

The fourth proportional to 210,955.37, 316,452.28 and 68,764.15 is: 103,152.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,955.37 : 316,452.28 = 68,764.15 : x
  2. Step 2: Convert to fraction form
    210,955.37/316,452.28 = 68,764.15/x
  3. Step 3: Cross multiply
    210,955.37x = 316,452.28 × 68,764.15
  4. Step 4: Simplify right side
    210,955.37x = 21,760,572,049.76
  5. Step 5: Solve for x
    x = 21,760,572,049.76/210,955.37
  6. Step 6: Final answer
    x = 103,152.49

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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.