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Finding the Fourth Proportional to 208,292.12, 312,449.84 and 58,520.72

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Solution

The fourth proportional to 208,292.12, 312,449.84 and 58,520.72 is: 87,784.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,292.12 : 312,449.84 = 58,520.72 : x
  2. Step 2: Convert to fraction form
    208,292.12/312,449.84 = 58,520.72/x
  3. Step 3: Cross multiply
    208,292.12x = 312,449.84 × 58,520.72
  4. Step 4: Simplify right side
    208,292.12x = 18,284,790,089.21
  5. Step 5: Solve for x
    x = 18,284,790,089.21/208,292.12
  6. Step 6: Final answer
    x = 87,784.36

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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.