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Finding the Fourth Proportional to 382,838.41, 528,307.69 and 210,754.97

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Solution

The fourth proportional to 382,838.41, 528,307.69 and 210,754.97 is: 290,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,838.41 : 528,307.69 = 210,754.97 : x
  2. Step 2: Convert to fraction form
    382,838.41/528,307.69 = 210,754.97/x
  3. Step 3: Cross multiply
    382,838.41x = 528,307.69 × 210,754.97
  4. Step 4: Simplify right side
    382,838.41x = 111,343,472,150.60
  5. Step 5: Solve for x
    x = 111,343,472,150.60/382,838.41
  6. Step 6: Final answer
    x = 290,836.73

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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.