Home / 421,266.43-631,899.69-140,783.68

Finding the Fourth Proportional to 421,266.43, 631,899.69 and 140,783.68

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Solution

The fourth proportional to 421,266.43, 631,899.69 and 140,783.68 is: 211,175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,266.43 : 631,899.69 = 140,783.68 : x
  2. Step 2: Convert to fraction form
    421,266.43/631,899.69 = 140,783.68/x
  3. Step 3: Cross multiply
    421,266.43x = 631,899.69 × 140,783.68
  4. Step 4: Simplify right side
    421,266.43x = 88,961,163,749.06
  5. Step 5: Solve for x
    x = 88,961,163,749.06/421,266.43
  6. Step 6: Final answer
    x = 211,175.54

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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.