Home / 285,780.65-428,583.42-197,600.81

Finding the Fourth Proportional to 285,780.65, 428,583.42 and 197,600.81

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Solution

The fourth proportional to 285,780.65, 428,583.42 and 197,600.81 is: 296,340.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,780.65 : 428,583.42 = 197,600.81 : x
  2. Step 2: Convert to fraction form
    285,780.65/428,583.42 = 197,600.81/x
  3. Step 3: Cross multiply
    285,780.65x = 428,583.42 × 197,600.81
  4. Step 4: Simplify right side
    285,780.65x = 84,688,428,801.65
  5. Step 5: Solve for x
    x = 84,688,428,801.65/285,780.65
  6. Step 6: Final answer
    x = 296,340.67

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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.