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Finding the Fourth Proportional to 309,298.85, 425,804.95 and 277,412.39

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Solution

The fourth proportional to 309,298.85, 425,804.95 and 277,412.39 is: 381,907.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,298.85 : 425,804.95 = 277,412.39 : x
  2. Step 2: Convert to fraction form
    309,298.85/425,804.95 = 277,412.39/x
  3. Step 3: Cross multiply
    309,298.85x = 425,804.95 × 277,412.39
  4. Step 4: Simplify right side
    309,298.85x = 118,123,568,853.33
  5. Step 5: Solve for x
    x = 118,123,568,853.33/309,298.85
  6. Step 6: Final answer
    x = 381,907.56

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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.