Home / 315,576.20-472,586.70-209,822.60

Finding the Fourth Proportional to 315,576.20, 472,586.70 and 209,822.60

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Solution

The fourth proportional to 315,576.20, 472,586.70 and 209,822.60 is: 314,216.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,576.20 : 472,586.70 = 209,822.60 : x
  2. Step 2: Convert to fraction form
    315,576.20/472,586.70 = 209,822.60/x
  3. Step 3: Cross multiply
    315,576.20x = 472,586.70 × 209,822.60
  4. Step 4: Simplify right side
    315,576.20x = 99,159,370,119.42
  5. Step 5: Solve for x
    x = 99,159,370,119.42/315,576.20
  6. Step 6: Final answer
    x = 314,216.88

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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.