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Finding the Fourth Proportional to 210,839.35, 316,258.76 and 68,684.39

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Solution

The fourth proportional to 210,839.35, 316,258.76 and 68,684.39 is: 103,026.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,839.35 : 316,258.76 = 68,684.39 : x
  2. Step 2: Convert to fraction form
    210,839.35/316,258.76 = 68,684.39/x
  3. Step 3: Cross multiply
    210,839.35x = 316,258.76 × 68,684.39
  4. Step 4: Simplify right side
    210,839.35x = 21,722,039,402.79
  5. Step 5: Solve for x
    x = 21,722,039,402.79/210,839.35
  6. Step 6: Final answer
    x = 103,026.50

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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.