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Finding the Fourth Proportional to 210,597.12, 315,701.28 and 105,324.48

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Solution

The fourth proportional to 210,597.12, 315,701.28 and 105,324.48 is: 157,889.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,597.12 : 315,701.28 = 105,324.48 : x
  2. Step 2: Convert to fraction form
    210,597.12/315,701.28 = 105,324.48/x
  3. Step 3: Cross multiply
    210,597.12x = 315,701.28 × 105,324.48
  4. Step 4: Simplify right side
    210,597.12x = 33,251,073,151.33
  5. Step 5: Solve for x
    x = 33,251,073,151.33/210,597.12
  6. Step 6: Final answer
    x = 157,889.50

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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.