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Finding the Fourth Proportional to 275,310.90, 412,966.35 and 191,330.10

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Solution

The fourth proportional to 275,310.90, 412,966.35 and 191,330.10 is: 286,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,310.90 : 412,966.35 = 191,330.10 : x
  2. Step 2: Convert to fraction form
    275,310.90/412,966.35 = 191,330.10/x
  3. Step 3: Cross multiply
    275,310.90x = 412,966.35 × 191,330.10
  4. Step 4: Simplify right side
    275,310.90x = 79,012,893,042.14
  5. Step 5: Solve for x
    x = 79,012,893,042.14/275,310.90
  6. Step 6: Final answer
    x = 286,995.15

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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.