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Finding the Fourth Proportional to 309,597.19, 427,244.89 and 180,624.33

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Solution

The fourth proportional to 309,597.19, 427,244.89 and 180,624.33 is: 249,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,597.19 : 427,244.89 = 180,624.33 : x
  2. Step 2: Convert to fraction form
    309,597.19/427,244.89 = 180,624.33/x
  3. Step 3: Cross multiply
    309,597.19x = 427,244.89 × 180,624.33
  4. Step 4: Simplify right side
    309,597.19x = 77,170,821,571.78
  5. Step 5: Solve for x
    x = 77,170,821,571.78/309,597.19
  6. Step 6: Final answer
    x = 249,262.02

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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.