Home / 415,087.60-622,631.40-205,135.60

Finding the Fourth Proportional to 415,087.60, 622,631.40 and 205,135.60

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Solution

The fourth proportional to 415,087.60, 622,631.40 and 205,135.60 is: 307,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,087.60 : 622,631.40 = 205,135.60 : x
  2. Step 2: Convert to fraction form
    415,087.60/622,631.40 = 205,135.60/x
  3. Step 3: Cross multiply
    415,087.60x = 622,631.40 × 205,135.60
  4. Step 4: Simplify right side
    415,087.60x = 127,723,865,817.84
  5. Step 5: Solve for x
    x = 127,723,865,817.84/415,087.60
  6. Step 6: Final answer
    x = 307,703.40

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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.