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Finding the Fourth Proportional to 310,331.40, 465,059.70 and 191,650.20

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Solution

The fourth proportional to 310,331.40, 465,059.70 and 191,650.20 is: 287,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,331.40 : 465,059.70 = 191,650.20 : x
  2. Step 2: Convert to fraction form
    310,331.40/465,059.70 = 191,650.20/x
  3. Step 3: Cross multiply
    310,331.40x = 465,059.70 × 191,650.20
  4. Step 4: Simplify right side
    310,331.40x = 89,128,784,516.94
  5. Step 5: Solve for x
    x = 89,128,784,516.94/310,331.40
  6. Step 6: Final answer
    x = 287,205.18

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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.