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Finding the Fourth Proportional to 211,290.93, 316,947.94 and 53,520.75

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Solution

The fourth proportional to 211,290.93, 316,947.94 and 53,520.75 is: 80,284.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,290.93 : 316,947.94 = 53,520.75 : x
  2. Step 2: Convert to fraction form
    211,290.93/316,947.94 = 53,520.75/x
  3. Step 3: Cross multiply
    211,290.93x = 316,947.94 × 53,520.75
  4. Step 4: Simplify right side
    211,290.93x = 16,963,291,325.95
  5. Step 5: Solve for x
    x = 16,963,291,325.95/211,290.93
  6. Step 6: Final answer
    x = 80,284.05

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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.