Home / 382,769.12-528,212.40-212,999.60

Finding the Fourth Proportional to 382,769.12, 528,212.40 and 212,999.60

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Solution

The fourth proportional to 382,769.12, 528,212.40 and 212,999.60 is: 293,934.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,769.12 : 528,212.40 = 212,999.60 : x
  2. Step 2: Convert to fraction form
    382,769.12/528,212.40 = 212,999.60/x
  3. Step 3: Cross multiply
    382,769.12x = 528,212.40 × 212,999.60
  4. Step 4: Simplify right side
    382,769.12x = 112,509,029,915.04
  5. Step 5: Solve for x
    x = 112,509,029,915.04/382,769.12
  6. Step 6: Final answer
    x = 293,934.45

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1.5x scale

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.