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Finding the Fourth Proportional to 380,603.60, 525,239.28 and 208,519.04

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Solution

The fourth proportional to 380,603.60, 525,239.28 and 208,519.04 is: 287,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,603.60 : 525,239.28 = 208,519.04 : x
  2. Step 2: Convert to fraction form
    380,603.60/525,239.28 = 208,519.04/x
  3. Step 3: Cross multiply
    380,603.60x = 525,239.28 × 208,519.04
  4. Step 4: Simplify right side
    380,603.60x = 109,522,390,435.89
  5. Step 5: Solve for x
    x = 109,522,390,435.89/380,603.60
  6. Step 6: Final answer
    x = 287,759.73

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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.