Home / 421,284.30-631,907.01-105,734.22

Finding the Fourth Proportional to 421,284.30, 631,907.01 and 105,734.22

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Solution

The fourth proportional to 421,284.30, 631,907.01 and 105,734.22 is: 158,596.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,284.30 : 631,907.01 = 105,734.22 : x
  2. Step 2: Convert to fraction form
    421,284.30/631,907.01 = 105,734.22/x
  3. Step 3: Cross multiply
    421,284.30x = 631,907.01 × 105,734.22
  4. Step 4: Simplify right side
    421,284.30x = 66,814,194,814.88
  5. Step 5: Solve for x
    x = 66,814,194,814.88/421,284.30
  6. Step 6: Final answer
    x = 158,596.45

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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.