Home / 382,679.16-528,122.48-212,913.64

Finding the Fourth Proportional to 382,679.16, 528,122.48 and 212,913.64

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Solution

The fourth proportional to 382,679.16, 528,122.48 and 212,913.64 is: 293,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,679.16 : 528,122.48 = 212,913.64 : x
  2. Step 2: Convert to fraction form
    382,679.16/528,122.48 = 212,913.64/x
  3. Step 3: Cross multiply
    382,679.16x = 528,122.48 × 212,913.64
  4. Step 4: Simplify right side
    382,679.16x = 112,444,479,582.63
  5. Step 5: Solve for x
    x = 112,444,479,582.63/382,679.16
  6. Step 6: Final answer
    x = 293,834.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.