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Finding the Fourth Proportional to 211,454.55, 317,108.05 and 85,062.02

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Solution

The fourth proportional to 211,454.55, 317,108.05 and 85,062.02 is: 127,563.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,454.55 : 317,108.05 = 85,062.02 : x
  2. Step 2: Convert to fraction form
    211,454.55/317,108.05 = 85,062.02/x
  3. Step 3: Cross multiply
    211,454.55x = 317,108.05 × 85,062.02
  4. Step 4: Simplify right side
    211,454.55x = 26,973,849,493.07
  5. Step 5: Solve for x
    x = 26,973,849,493.07/211,454.55
  6. Step 6: Final answer
    x = 127,563.34

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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.