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Finding the Fourth Proportional to 310,910.40, 466,135.20 and 210,820.80

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Solution

The fourth proportional to 310,910.40, 466,135.20 and 210,820.80 is: 316,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,910.40 : 466,135.20 = 210,820.80 : x
  2. Step 2: Convert to fraction form
    310,910.40/466,135.20 = 210,820.80/x
  3. Step 3: Cross multiply
    310,910.40x = 466,135.20 × 210,820.80
  4. Step 4: Simplify right side
    310,910.40x = 98,270,995,772.16
  5. Step 5: Solve for x
    x = 98,270,995,772.16/310,910.40
  6. Step 6: Final answer
    x = 316,074.97

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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.