Home / 407,021.05-609,857.65-140,633.51

Finding the Fourth Proportional to 407,021.05, 609,857.65 and 140,633.51

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Solution

The fourth proportional to 407,021.05, 609,857.65 and 140,633.51 is: 210,717.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,021.05 : 609,857.65 = 140,633.51 : x
  2. Step 2: Convert to fraction form
    407,021.05/609,857.65 = 140,633.51/x
  3. Step 3: Cross multiply
    407,021.05x = 609,857.65 × 140,633.51
  4. Step 4: Simplify right side
    407,021.05x = 85,766,421,216.68
  5. Step 5: Solve for x
    x = 85,766,421,216.68/407,021.05
  6. Step 6: Final answer
    x = 210,717.41

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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.