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Finding the Fourth Proportional to 298,445.36, 447,775 and 148,672.30

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Solution

The fourth proportional to 298,445.36, 447,775 and 148,672.30 is: 223,061.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,445.36 : 447,775 = 148,672.30 : x
  2. Step 2: Convert to fraction form
    298,445.36/447,775 = 148,672.30/x
  3. Step 3: Cross multiply
    298,445.36x = 447,775 × 148,672.30
  4. Step 4: Simplify right side
    298,445.36x = 66,571,739,132.50
  5. Step 5: Solve for x
    x = 66,571,739,132.50/298,445.36
  6. Step 6: Final answer
    x = 223,061.73

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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.