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Finding the Fourth Proportional to 391,544.20, 540,202.48 and 219,437

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Solution

The fourth proportional to 391,544.20, 540,202.48 and 219,437 is: 302,751.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,544.20 : 540,202.48 = 219,437 : x
  2. Step 2: Convert to fraction form
    391,544.20/540,202.48 = 219,437/x
  3. Step 3: Cross multiply
    391,544.20x = 540,202.48 × 219,437
  4. Step 4: Simplify right side
    391,544.20x = 118,540,411,603.76
  5. Step 5: Solve for x
    x = 118,540,411,603.76/391,544.20
  6. Step 6: Final answer
    x = 302,751.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.