Home / 420,159.42-629,943.87-153,885.33

Finding the Fourth Proportional to 420,159.42, 629,943.87 and 153,885.33

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Solution

The fourth proportional to 420,159.42, 629,943.87 and 153,885.33 is: 230,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,159.42 : 629,943.87 = 153,885.33 : x
  2. Step 2: Convert to fraction form
    420,159.42/629,943.87 = 153,885.33/x
  3. Step 3: Cross multiply
    420,159.42x = 629,943.87 × 153,885.33
  4. Step 4: Simplify right side
    420,159.42x = 96,939,120,316.43
  5. Step 5: Solve for x
    x = 96,939,120,316.43/420,159.42
  6. Step 6: Final answer
    x = 230,719.85

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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.