Home / 212,384.25-318,576.38-87,728.49

Finding the Fourth Proportional to 212,384.25, 318,576.38 and 87,728.49

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Solution

The fourth proportional to 212,384.25, 318,576.38 and 87,728.49 is: 131,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,384.25 : 318,576.38 = 87,728.49 : x
  2. Step 2: Convert to fraction form
    212,384.25/318,576.38 = 87,728.49/x
  3. Step 3: Cross multiply
    212,384.25x = 318,576.38 × 87,728.49
  4. Step 4: Simplify right side
    212,384.25x = 27,948,224,328.42
  5. Step 5: Solve for x
    x = 27,948,224,328.42/212,384.25
  6. Step 6: Final answer
    x = 131,592.74

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1.5x scale

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.