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Finding the Fourth Proportional to 549,017.36, 757,636.14 and 303,978.70

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Solution

The fourth proportional to 549,017.36, 757,636.14 and 303,978.70 is: 419,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,017.36 : 757,636.14 = 303,978.70 : x
  2. Step 2: Convert to fraction form
    549,017.36/757,636.14 = 303,978.70/x
  3. Step 3: Cross multiply
    549,017.36x = 757,636.14 × 303,978.70
  4. Step 4: Simplify right side
    549,017.36x = 230,305,248,910.22
  5. Step 5: Solve for x
    x = 230,305,248,910.22/549,017.36
  6. Step 6: Final answer
    x = 419,486.28

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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.