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Finding the Fourth Proportional to 208,443.04, 312,479.04 and 75,293.60

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Solution

The fourth proportional to 208,443.04, 312,479.04 and 75,293.60 is: 112,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,443.04 : 312,479.04 = 75,293.60 : x
  2. Step 2: Convert to fraction form
    208,443.04/312,479.04 = 75,293.60/x
  3. Step 3: Cross multiply
    208,443.04x = 312,479.04 × 75,293.60
  4. Step 4: Simplify right side
    208,443.04x = 23,527,671,846.14
  5. Step 5: Solve for x
    x = 23,527,671,846.14/208,443.04
  6. Step 6: Final answer
    x = 112,873.39

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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.