Home / 215,087.78-322,631.64-102,426.41

Finding the Fourth Proportional to 215,087.78, 322,631.64 and 102,426.41

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Solution

The fourth proportional to 215,087.78, 322,631.64 and 102,426.41 is: 153,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,087.78 : 322,631.64 = 102,426.41 : x
  2. Step 2: Convert to fraction form
    215,087.78/322,631.64 = 102,426.41/x
  3. Step 3: Cross multiply
    215,087.78x = 322,631.64 × 102,426.41
  4. Step 4: Simplify right side
    215,087.78x = 33,046,001,444.19
  5. Step 5: Solve for x
    x = 33,046,001,444.19/215,087.78
  6. Step 6: Final answer
    x = 153,639.60

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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.