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Finding the Fourth Proportional to 310,072.90, 465,109.35 and 220,843.30

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Solution

The fourth proportional to 310,072.90, 465,109.35 and 220,843.30 is: 331,264.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,072.90 : 465,109.35 = 220,843.30 : x
  2. Step 2: Convert to fraction form
    310,072.90/465,109.35 = 220,843.30/x
  3. Step 3: Cross multiply
    310,072.90x = 465,109.35 × 220,843.30
  4. Step 4: Simplify right side
    310,072.90x = 102,716,283,714.86
  5. Step 5: Solve for x
    x = 102,716,283,714.86/310,072.90
  6. Step 6: Final answer
    x = 331,264.95

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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.