Home / 221,412.90-331,627.28-171,330.60

Finding the Fourth Proportional to 221,412.90, 331,627.28 and 171,330.60

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Solution

The fourth proportional to 221,412.90, 331,627.28 and 171,330.60 is: 256,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,412.90 : 331,627.28 = 171,330.60 : x
  2. Step 2: Convert to fraction form
    221,412.90/331,627.28 = 171,330.60/x
  3. Step 3: Cross multiply
    221,412.90x = 331,627.28 × 171,330.60
  4. Step 4: Simplify right side
    221,412.90x = 56,817,900,002.12
  5. Step 5: Solve for x
    x = 56,817,900,002.12/221,412.90
  6. Step 6: Final answer
    x = 256,615.13

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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.