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Finding the Fourth Proportional to 192,603.20, 288,789.60 and 99,291.20

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Solution

The fourth proportional to 192,603.20, 288,789.60 and 99,291.20 is: 148,877.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,603.20 : 288,789.60 = 99,291.20 : x
  2. Step 2: Convert to fraction form
    192,603.20/288,789.60 = 99,291.20/x
  3. Step 3: Cross multiply
    192,603.20x = 288,789.60 × 99,291.20
  4. Step 4: Simplify right side
    192,603.20x = 28,674,265,931.52
  5. Step 5: Solve for x
    x = 28,674,265,931.52/192,603.20
  6. Step 6: Final answer
    x = 148,877.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.