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Finding the Fourth Proportional to 191,310.60, 286,965.90 and 107,329.80

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Solution

The fourth proportional to 191,310.60, 286,965.90 and 107,329.80 is: 160,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,310.60 : 286,965.90 = 107,329.80 : x
  2. Step 2: Convert to fraction form
    191,310.60/286,965.90 = 107,329.80/x
  3. Step 3: Cross multiply
    191,310.60x = 286,965.90 × 107,329.80
  4. Step 4: Simplify right side
    191,310.60x = 30,799,992,653.82
  5. Step 5: Solve for x
    x = 30,799,992,653.82/191,310.60
  6. Step 6: Final answer
    x = 160,994.70

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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.