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Finding the Fourth Proportional to 266,815.71, 368,205.56 and 145,956.97

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Solution

The fourth proportional to 266,815.71, 368,205.56 and 145,956.97 is: 201,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,815.71 : 368,205.56 = 145,956.97 : x
  2. Step 2: Convert to fraction form
    266,815.71/368,205.56 = 145,956.97/x
  3. Step 3: Cross multiply
    266,815.71x = 368,205.56 × 145,956.97
  4. Step 4: Simplify right side
    266,815.71x = 53,742,166,224.45
  5. Step 5: Solve for x
    x = 53,742,166,224.45/266,815.71
  6. Step 6: Final answer
    x = 201,420.55

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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.