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Finding the Fourth Proportional to 348,538.63, 522,813.11 and 135,318.89

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Solution

The fourth proportional to 348,538.63, 522,813.11 and 135,318.89 is: 202,980.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,538.63 : 522,813.11 = 135,318.89 : x
  2. Step 2: Convert to fraction form
    348,538.63/522,813.11 = 135,318.89/x
  3. Step 3: Cross multiply
    348,538.63x = 522,813.11 × 135,318.89
  4. Step 4: Simplify right side
    348,538.63x = 70,746,489,722.65
  5. Step 5: Solve for x
    x = 70,746,489,722.65/348,538.63
  6. Step 6: Final answer
    x = 202,980.34

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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.