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Finding the Fourth Proportional to 310,069.59, 427,942.83 and 189,281.19

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Solution

The fourth proportional to 310,069.59, 427,942.83 and 189,281.19 is: 261,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,069.59 : 427,942.83 = 189,281.19 : x
  2. Step 2: Convert to fraction form
    310,069.59/427,942.83 = 189,281.19/x
  3. Step 3: Cross multiply
    310,069.59x = 427,942.83 × 189,281.19
  4. Step 4: Simplify right side
    310,069.59x = 81,001,527,167.96
  5. Step 5: Solve for x
    x = 81,001,527,167.96/310,069.59
  6. Step 6: Final answer
    x = 261,236.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.