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Finding the Fourth Proportional to 454,154.40, 681,231.60 and 311,613.60

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Solution

The fourth proportional to 454,154.40, 681,231.60 and 311,613.60 is: 467,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,154.40 : 681,231.60 = 311,613.60 : x
  2. Step 2: Convert to fraction form
    454,154.40/681,231.60 = 311,613.60/x
  3. Step 3: Cross multiply
    454,154.40x = 681,231.60 × 311,613.60
  4. Step 4: Simplify right side
    454,154.40x = 212,281,031,309.76
  5. Step 5: Solve for x
    x = 212,281,031,309.76/454,154.40
  6. Step 6: Final answer
    x = 467,420.40

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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.