Home / 450,520.77-621,720.31-243,789.16

Finding the Fourth Proportional to 450,520.77, 621,720.31 and 243,789.16

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Solution

The fourth proportional to 450,520.77, 621,720.31 and 243,789.16 is: 336,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,520.77 : 621,720.31 = 243,789.16 : x
  2. Step 2: Convert to fraction form
    450,520.77/621,720.31 = 243,789.16/x
  3. Step 3: Cross multiply
    450,520.77x = 621,720.31 × 243,789.16
  4. Step 4: Simplify right side
    450,520.77x = 151,568,672,129.84
  5. Step 5: Solve for x
    x = 151,568,672,129.84/450,520.77
  6. Step 6: Final answer
    x = 336,429.93

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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.