Home / 528,286.56-792,421.20-212,735.52

Finding the Fourth Proportional to 528,286.56, 792,421.20 and 212,735.52

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Solution

The fourth proportional to 528,286.56, 792,421.20 and 212,735.52 is: 319,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,286.56 : 792,421.20 = 212,735.52 : x
  2. Step 2: Convert to fraction form
    528,286.56/792,421.20 = 212,735.52/x
  3. Step 3: Cross multiply
    528,286.56x = 792,421.20 × 212,735.52
  4. Step 4: Simplify right side
    528,286.56x = 168,576,136,041.02
  5. Step 5: Solve for x
    x = 168,576,136,041.02/528,286.56
  6. Step 6: Final answer
    x = 319,099.80

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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.