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Finding the Fourth Proportional to 208,605.61, 312,920.93 and 58,858.71

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Solution

The fourth proportional to 208,605.61, 312,920.93 and 58,858.71 is: 88,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,605.61 : 312,920.93 = 58,858.71 : x
  2. Step 2: Convert to fraction form
    208,605.61/312,920.93 = 58,858.71/x
  3. Step 3: Cross multiply
    208,605.61x = 312,920.93 × 58,858.71
  4. Step 4: Simplify right side
    208,605.61x = 18,418,122,271.80
  5. Step 5: Solve for x
    x = 18,418,122,271.80/208,605.61
  6. Step 6: Final answer
    x = 88,291.60

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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.