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Finding the Fourth Proportional to 448,609.86, 619,072.47 and 247,405.86

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Solution

The fourth proportional to 448,609.86, 619,072.47 and 247,405.86 is: 341,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,609.86 : 619,072.47 = 247,405.86 : x
  2. Step 2: Convert to fraction form
    448,609.86/619,072.47 = 247,405.86/x
  3. Step 3: Cross multiply
    448,609.86x = 619,072.47 × 247,405.86
  4. Step 4: Simplify right side
    448,609.86x = 153,162,156,842.67
  5. Step 5: Solve for x
    x = 153,162,156,842.67/448,609.86
  6. Step 6: Final answer
    x = 341,415.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.