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Finding the Fourth Proportional to 208,295.73, 312,378.86 and 75,158.66

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Solution

The fourth proportional to 208,295.73, 312,378.86 and 75,158.66 is: 112,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,295.73 : 312,378.86 = 75,158.66 : x
  2. Step 2: Convert to fraction form
    208,295.73/312,378.86 = 75,158.66/x
  3. Step 3: Cross multiply
    208,295.73x = 312,378.86 × 75,158.66
  4. Step 4: Simplify right side
    208,295.73x = 23,477,977,498.77
  5. Step 5: Solve for x
    x = 23,477,977,498.77/208,295.73
  6. Step 6: Final answer
    x = 112,714.64

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1.5x scale

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.