Home / 309,979.07-427,770.89-174,013.28

Finding the Fourth Proportional to 309,979.07, 427,770.89 and 174,013.28

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Solution

The fourth proportional to 309,979.07, 427,770.89 and 174,013.28 is: 240,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,979.07 : 427,770.89 = 174,013.28 : x
  2. Step 2: Convert to fraction form
    309,979.07/427,770.89 = 174,013.28/x
  3. Step 3: Cross multiply
    309,979.07x = 427,770.89 × 174,013.28
  4. Step 4: Simplify right side
    309,979.07x = 74,437,813,953.60
  5. Step 5: Solve for x
    x = 74,437,813,953.60/309,979.07
  6. Step 6: Final answer
    x = 240,138.20

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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.