Home / 340,719.39-469,756.05-279,239.25

Finding the Fourth Proportional to 340,719.39, 469,756.05 and 279,239.25

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Solution

The fourth proportional to 340,719.39, 469,756.05 and 279,239.25 is: 384,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,719.39 : 469,756.05 = 279,239.25 : x
  2. Step 2: Convert to fraction form
    340,719.39/469,756.05 = 279,239.25/x
  3. Step 3: Cross multiply
    340,719.39x = 469,756.05 × 279,239.25
  4. Step 4: Simplify right side
    340,719.39x = 131,174,327,084.96
  5. Step 5: Solve for x
    x = 131,174,327,084.96/340,719.39
  6. Step 6: Final answer
    x = 384,992.26

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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.