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Finding the Fourth Proportional to 451,221.84, 622,686.87 and 247,240.35

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Solution

The fourth proportional to 451,221.84, 622,686.87 and 247,240.35 is: 341,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,221.84 : 622,686.87 = 247,240.35 : x
  2. Step 2: Convert to fraction form
    451,221.84/622,686.87 = 247,240.35/x
  3. Step 3: Cross multiply
    451,221.84x = 622,686.87 × 247,240.35
  4. Step 4: Simplify right side
    451,221.84x = 153,953,319,679.21
  5. Step 5: Solve for x
    x = 153,953,319,679.21/451,221.84
  6. Step 6: Final answer
    x = 341,192.08

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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.