Home / 421,254.06-631,965.78-155,015.97

Finding the Fourth Proportional to 421,254.06, 631,965.78 and 155,015.97

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Solution

The fourth proportional to 421,254.06, 631,965.78 and 155,015.97 is: 232,555.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,254.06 : 631,965.78 = 155,015.97 : x
  2. Step 2: Convert to fraction form
    421,254.06/631,965.78 = 155,015.97/x
  3. Step 3: Cross multiply
    421,254.06x = 631,965.78 × 155,015.97
  4. Step 4: Simplify right side
    421,254.06x = 97,964,788,393.51
  5. Step 5: Solve for x
    x = 97,964,788,393.51/421,254.06
  6. Step 6: Final answer
    x = 232,555.12

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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.