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Finding the Fourth Proportional to 275,428.60, 413,142.90 and 191,010.40

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Solution

The fourth proportional to 275,428.60, 413,142.90 and 191,010.40 is: 286,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,428.60 : 413,142.90 = 191,010.40 : x
  2. Step 2: Convert to fraction form
    275,428.60/413,142.90 = 191,010.40/x
  3. Step 3: Cross multiply
    275,428.60x = 413,142.90 × 191,010.40
  4. Step 4: Simplify right side
    275,428.60x = 78,914,590,586.16
  5. Step 5: Solve for x
    x = 78,914,590,586.16/275,428.60
  6. Step 6: Final answer
    x = 286,515.60

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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.