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Finding the Fourth Proportional to 307,980.51, 425,016.36 and 180,658.23

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Solution

The fourth proportional to 307,980.51, 425,016.36 and 180,658.23 is: 249,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,980.51 : 425,016.36 = 180,658.23 : x
  2. Step 2: Convert to fraction form
    307,980.51/425,016.36 = 180,658.23/x
  3. Step 3: Cross multiply
    307,980.51x = 425,016.36 × 180,658.23
  4. Step 4: Simplify right side
    307,980.51x = 76,782,703,318.64
  5. Step 5: Solve for x
    x = 76,782,703,318.64/307,980.51
  6. Step 6: Final answer
    x = 249,310.27

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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.