Home / 421,259.03-631,888.55-140,776.28

Finding the Fourth Proportional to 421,259.03, 631,888.55 and 140,776.28

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Solution

The fourth proportional to 421,259.03, 631,888.55 and 140,776.28 is: 211,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,259.03 : 631,888.55 = 140,776.28 : x
  2. Step 2: Convert to fraction form
    421,259.03/631,888.55 = 140,776.28/x
  3. Step 3: Cross multiply
    421,259.03x = 631,888.55 × 140,776.28
  4. Step 4: Simplify right side
    421,259.03x = 88,954,919,443.59
  5. Step 5: Solve for x
    x = 88,954,919,443.59/421,259.03
  6. Step 6: Final answer
    x = 211,164.42

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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.