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Finding the Fourth Proportional to 450,636.40, 621,908 and 259,661.84

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Solution

The fourth proportional to 450,636.40, 621,908 and 259,661.84 is: 358,350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,636.40 : 621,908 = 259,661.84 : x
  2. Step 2: Convert to fraction form
    450,636.40/621,908 = 259,661.84/x
  3. Step 3: Cross multiply
    450,636.40x = 621,908 × 259,661.84
  4. Step 4: Simplify right side
    450,636.40x = 161,485,775,590.72
  5. Step 5: Solve for x
    x = 161,485,775,590.72/450,636.40
  6. Step 6: Final answer
    x = 358,350.49

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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.