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Finding the Fourth Proportional to 318,344.97, 439,313.91 and 180,550.11

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Solution

The fourth proportional to 318,344.97, 439,313.91 and 180,550.11 is: 249,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,344.97 : 439,313.91 = 180,550.11 : x
  2. Step 2: Convert to fraction form
    318,344.97/439,313.91 = 180,550.11/x
  3. Step 3: Cross multiply
    318,344.97x = 439,313.91 × 180,550.11
  4. Step 4: Simplify right side
    318,344.97x = 79,318,174,775.03
  5. Step 5: Solve for x
    x = 79,318,174,775.03/318,344.97
  6. Step 6: Final answer
    x = 249,157.93

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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.