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Finding the Fourth Proportional to 379,999.42, 524,394.69 and 207,915.37

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Solution

The fourth proportional to 379,999.42, 524,394.69 and 207,915.37 is: 286,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,999.42 : 524,394.69 = 207,915.37 : x
  2. Step 2: Convert to fraction form
    379,999.42/524,394.69 = 207,915.37/x
  3. Step 3: Cross multiply
    379,999.42x = 524,394.69 × 207,915.37
  4. Step 4: Simplify right side
    379,999.42x = 109,029,718,025.96
  5. Step 5: Solve for x
    x = 109,029,718,025.96/379,999.42
  6. Step 6: Final answer
    x = 286,920.75

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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.