Home / 211,638.34-317,438.07-71,398.18

Finding the Fourth Proportional to 211,638.34, 317,438.07 and 71,398.18

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Solution

The fourth proportional to 211,638.34, 317,438.07 and 71,398.18 is: 107,090.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,638.34 : 317,438.07 = 71,398.18 : x
  2. Step 2: Convert to fraction form
    211,638.34/317,438.07 = 71,398.18/x
  3. Step 3: Cross multiply
    211,638.34x = 317,438.07 × 71,398.18
  4. Step 4: Simplify right side
    211,638.34x = 22,664,500,460.71
  5. Step 5: Solve for x
    x = 22,664,500,460.71/211,638.34
  6. Step 6: Final answer
    x = 107,090.71

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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.