Home / 421,009.82-631,964.28-181,242.39

Finding the Fourth Proportional to 421,009.82, 631,964.28 and 181,242.39

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Solution

The fourth proportional to 421,009.82, 631,964.28 and 181,242.39 is: 272,057.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,009.82 : 631,964.28 = 181,242.39 : x
  2. Step 2: Convert to fraction form
    421,009.82/631,964.28 = 181,242.39/x
  3. Step 3: Cross multiply
    421,009.82x = 631,964.28 × 181,242.39
  4. Step 4: Simplify right side
    421,009.82x = 114,538,716,501.83
  5. Step 5: Solve for x
    x = 114,538,716,501.83/421,009.82
  6. Step 6: Final answer
    x = 272,057.12

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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.