Home / 407,810.42-611,721.78-141,579.40

Finding the Fourth Proportional to 407,810.42, 611,721.78 and 141,579.40

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Solution

The fourth proportional to 407,810.42, 611,721.78 and 141,579.40 is: 212,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,810.42 : 611,721.78 = 141,579.40 : x
  2. Step 2: Convert to fraction form
    407,810.42/611,721.78 = 141,579.40/x
  3. Step 3: Cross multiply
    407,810.42x = 611,721.78 × 141,579.40
  4. Step 4: Simplify right side
    407,810.42x = 86,607,202,579.33
  5. Step 5: Solve for x
    x = 86,607,202,579.33/407,810.42
  6. Step 6: Final answer
    x = 212,371.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.