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Finding the Fourth Proportional to 285,810.60, 428,606.06 and 135,935.40

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Solution

The fourth proportional to 285,810.60, 428,606.06 and 135,935.40 is: 203,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,810.60 : 428,606.06 = 135,935.40 : x
  2. Step 2: Convert to fraction form
    285,810.60/428,606.06 = 135,935.40/x
  3. Step 3: Cross multiply
    285,810.60x = 428,606.06 × 135,935.40
  4. Step 4: Simplify right side
    285,810.60x = 58,262,736,208.52
  5. Step 5: Solve for x
    x = 58,262,736,208.52/285,810.60
  6. Step 6: Final answer
    x = 203,850.86

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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.