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Finding the Fourth Proportional to 286,056.70, 428,955.45 and 108,504.70

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Solution

The fourth proportional to 286,056.70, 428,955.45 and 108,504.70 is: 162,707.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,056.70 : 428,955.45 = 108,504.70 : x
  2. Step 2: Convert to fraction form
    286,056.70/428,955.45 = 108,504.70/x
  3. Step 3: Cross multiply
    286,056.70x = 428,955.45 × 108,504.70
  4. Step 4: Simplify right side
    286,056.70x = 46,543,682,415.62
  5. Step 5: Solve for x
    x = 46,543,682,415.62/286,056.70
  6. Step 6: Final answer
    x = 162,707.89

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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.