Home / 370,821.89-511,731.35-209,682.67

Finding the Fourth Proportional to 370,821.89, 511,731.35 and 209,682.67

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Solution

The fourth proportional to 370,821.89, 511,731.35 and 209,682.67 is: 289,360.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,821.89 : 511,731.35 = 209,682.67 : x
  2. Step 2: Convert to fraction form
    370,821.89/511,731.35 = 209,682.67/x
  3. Step 3: Cross multiply
    370,821.89x = 511,731.35 × 209,682.67
  4. Step 4: Simplify right side
    370,821.89x = 107,301,195,790.71
  5. Step 5: Solve for x
    x = 107,301,195,790.71/370,821.89
  6. Step 6: Final answer
    x = 289,360.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.