Home / 285,780.40-428,583.04-197,600.56

Finding the Fourth Proportional to 285,780.40, 428,583.04 and 197,600.56

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Solution

The fourth proportional to 285,780.40, 428,583.04 and 197,600.56 is: 296,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,780.40 : 428,583.04 = 197,600.56 : x
  2. Step 2: Convert to fraction form
    285,780.40/428,583.04 = 197,600.56/x
  3. Step 3: Cross multiply
    285,780.40x = 428,583.04 × 197,600.56
  4. Step 4: Simplify right side
    285,780.40x = 84,688,248,710.50
  5. Step 5: Solve for x
    x = 84,688,248,710.50/285,780.40
  6. Step 6: Final answer
    x = 296,340.30

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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.