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Finding the Fourth Proportional to 434,863.81, 652,357.21 and 135,374.61

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Solution

The fourth proportional to 434,863.81, 652,357.21 and 135,374.61 is: 203,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,863.81 : 652,357.21 = 135,374.61 : x
  2. Step 2: Convert to fraction form
    434,863.81/652,357.21 = 135,374.61/x
  3. Step 3: Cross multiply
    434,863.81x = 652,357.21 × 135,374.61
  4. Step 4: Simplify right side
    434,863.81x = 88,312,602,884.44
  5. Step 5: Solve for x
    x = 88,312,602,884.44/434,863.81
  6. Step 6: Final answer
    x = 203,081.06

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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.