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Finding the Fourth Proportional to 211,380.60, 317,070.90 and 197,383.80

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Solution

The fourth proportional to 211,380.60, 317,070.90 and 197,383.80 is: 296,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,380.60 : 317,070.90 = 197,383.80 : x
  2. Step 2: Convert to fraction form
    211,380.60/317,070.90 = 197,383.80/x
  3. Step 3: Cross multiply
    211,380.60x = 317,070.90 × 197,383.80
  4. Step 4: Simplify right side
    211,380.60x = 62,584,659,111.42
  5. Step 5: Solve for x
    x = 62,584,659,111.42/211,380.60
  6. Step 6: Final answer
    x = 296,075.70

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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.