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Finding the Fourth Proportional to 450,073.36, 621,370.74 and 280,537.12

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Solution

The fourth proportional to 450,073.36, 621,370.74 and 280,537.12 is: 387,309.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,073.36 : 621,370.74 = 280,537.12 : x
  2. Step 2: Convert to fraction form
    450,073.36/621,370.74 = 280,537.12/x
  3. Step 3: Cross multiply
    450,073.36x = 621,370.74 × 280,537.12
  4. Step 4: Simplify right side
    450,073.36x = 174,317,557,851.87
  5. Step 5: Solve for x
    x = 174,317,557,851.87/450,073.36
  6. Step 6: Final answer
    x = 387,309.21

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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.