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Finding the Fourth Proportional to 289,212.40, 433,818.60 and 254,220.40

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Solution

The fourth proportional to 289,212.40, 433,818.60 and 254,220.40 is: 381,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,212.40 : 433,818.60 = 254,220.40 : x
  2. Step 2: Convert to fraction form
    289,212.40/433,818.60 = 254,220.40/x
  3. Step 3: Cross multiply
    289,212.40x = 433,818.60 × 254,220.40
  4. Step 4: Simplify right side
    289,212.40x = 110,285,538,019.44
  5. Step 5: Solve for x
    x = 110,285,538,019.44/289,212.40
  6. Step 6: Final answer
    x = 381,330.60

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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.