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Finding the Fourth Proportional to 391,749.52, 540,603.08 and 222,038.48

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Solution

The fourth proportional to 391,749.52, 540,603.08 and 222,038.48 is: 306,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,749.52 : 540,603.08 = 222,038.48 : x
  2. Step 2: Convert to fraction form
    391,749.52/540,603.08 = 222,038.48/x
  3. Step 3: Cross multiply
    391,749.52x = 540,603.08 × 222,038.48
  4. Step 4: Simplify right side
    391,749.52x = 120,034,686,166.52
  5. Step 5: Solve for x
    x = 120,034,686,166.52/391,749.52
  6. Step 6: Final answer
    x = 306,406.72

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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.