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Finding the Fourth Proportional to 208,006.66, 312,056.97 and 65,860.57

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Solution

The fourth proportional to 208,006.66, 312,056.97 and 65,860.57 is: 98,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,006.66 : 312,056.97 = 65,860.57 : x
  2. Step 2: Convert to fraction form
    208,006.66/312,056.97 = 65,860.57/x
  3. Step 3: Cross multiply
    208,006.66x = 312,056.97 × 65,860.57
  4. Step 4: Simplify right side
    208,006.66x = 20,552,249,916.67
  5. Step 5: Solve for x
    x = 20,552,249,916.67/208,006.66
  6. Step 6: Final answer
    x = 98,805.73

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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.