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Finding the Fourth Proportional to 208,448.40, 312,599.70 and 108,575.40

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Solution

The fourth proportional to 208,448.40, 312,599.70 and 108,575.40 is: 162,825.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,448.40 : 312,599.70 = 108,575.40 : x
  2. Step 2: Convert to fraction form
    208,448.40/312,599.70 = 108,575.40/x
  3. Step 3: Cross multiply
    208,448.40x = 312,599.70 × 108,575.40
  4. Step 4: Simplify right side
    208,448.40x = 33,940,637,467.38
  5. Step 5: Solve for x
    x = 33,940,637,467.38/208,448.40
  6. Step 6: Final answer
    x = 162,825.13

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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.