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Finding the Fourth Proportional to 211,398.44, 317,130.42 and 71,146.12

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Solution

The fourth proportional to 211,398.44, 317,130.42 and 71,146.12 is: 106,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,398.44 : 317,130.42 = 71,146.12 : x
  2. Step 2: Convert to fraction form
    211,398.44/317,130.42 = 71,146.12/x
  3. Step 3: Cross multiply
    211,398.44x = 317,130.42 × 71,146.12
  4. Step 4: Simplify right side
    211,398.44x = 22,562,598,916.97
  5. Step 5: Solve for x
    x = 22,562,598,916.97/211,398.44
  6. Step 6: Final answer
    x = 106,730.21

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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.