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Finding the Fourth Proportional to 355,398.60, 533,148.02 and 115,435.67

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Solution

The fourth proportional to 355,398.60, 533,148.02 and 115,435.67 is: 173,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,398.60 : 533,148.02 = 115,435.67 : x
  2. Step 2: Convert to fraction form
    355,398.60/533,148.02 = 115,435.67/x
  3. Step 3: Cross multiply
    355,398.60x = 533,148.02 × 115,435.67
  4. Step 4: Simplify right side
    355,398.60x = 61,544,298,897.87
  5. Step 5: Solve for x
    x = 61,544,298,897.87/355,398.60
  6. Step 6: Final answer
    x = 173,169.78

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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.