Home / 420,948.19-631,028.62-154,637.20

Finding the Fourth Proportional to 420,948.19, 631,028.62 and 154,637.20

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Solution

The fourth proportional to 420,948.19, 631,028.62 and 154,637.20 is: 231,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,948.19 : 631,028.62 = 154,637.20 : x
  2. Step 2: Convert to fraction form
    420,948.19/631,028.62 = 154,637.20/x
  3. Step 3: Cross multiply
    420,948.19x = 631,028.62 × 154,637.20
  4. Step 4: Simplify right side
    420,948.19x = 97,580,498,916.66
  5. Step 5: Solve for x
    x = 97,580,498,916.66/420,948.19
  6. Step 6: Final answer
    x = 231,811.19

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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.