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Finding the Fourth Proportional to 298,040.10, 447,060.15 and 265,380.90

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Solution

The fourth proportional to 298,040.10, 447,060.15 and 265,380.90 is: 398,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,040.10 : 447,060.15 = 265,380.90 : x
  2. Step 2: Convert to fraction form
    298,040.10/447,060.15 = 265,380.90/x
  3. Step 3: Cross multiply
    298,040.10x = 447,060.15 × 265,380.90
  4. Step 4: Simplify right side
    298,040.10x = 118,641,224,961.14
  5. Step 5: Solve for x
    x = 118,641,224,961.14/298,040.10
  6. Step 6: Final answer
    x = 398,071.35

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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.