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Finding the Fourth Proportional to 207,251.70, 310,877.55 and 191,505.30

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Solution

The fourth proportional to 207,251.70, 310,877.55 and 191,505.30 is: 287,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,251.70 : 310,877.55 = 191,505.30 : x
  2. Step 2: Convert to fraction form
    207,251.70/310,877.55 = 191,505.30/x
  3. Step 3: Cross multiply
    207,251.70x = 310,877.55 × 191,505.30
  4. Step 4: Simplify right side
    207,251.70x = 59,534,698,476.02
  5. Step 5: Solve for x
    x = 59,534,698,476.02/207,251.70
  6. Step 6: Final answer
    x = 287,257.95

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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.