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Finding the Fourth Proportional to 450,005, 621,019.86 and 248,813.96

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Solution

The fourth proportional to 450,005, 621,019.86 and 248,813.96 is: 343,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,005 : 621,019.86 = 248,813.96 : x
  2. Step 2: Convert to fraction form
    450,005/621,019.86 = 248,813.96/x
  3. Step 3: Cross multiply
    450,005x = 621,019.86 × 248,813.96
  4. Step 4: Simplify right side
    450,005x = 154,518,410,605.25
  5. Step 5: Solve for x
    x = 154,518,410,605.25/450,005
  6. Step 6: Final answer
    x = 343,370.43

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1.5x scale

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.