Home / 620,637.18-931,028.68-221,334.72

Finding the Fourth Proportional to 620,637.18, 931,028.68 and 221,334.72

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Solution

The fourth proportional to 620,637.18, 931,028.68 and 221,334.72 is: 332,028.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,637.18 : 931,028.68 = 221,334.72 : x
  2. Step 2: Convert to fraction form
    620,637.18/931,028.68 = 221,334.72/x
  3. Step 3: Cross multiply
    620,637.18x = 931,028.68 × 221,334.72
  4. Step 4: Simplify right side
    620,637.18x = 206,068,972,199.77
  5. Step 5: Solve for x
    x = 206,068,972,199.77/620,637.18
  6. Step 6: Final answer
    x = 332,028.08

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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.