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Finding the Fourth Proportional to 355,409.38, 533,141.61 and 118,752.89

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Solution

The fourth proportional to 355,409.38, 533,141.61 and 118,752.89 is: 178,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,409.38 : 533,141.61 = 118,752.89 : x
  2. Step 2: Convert to fraction form
    355,409.38/533,141.61 = 118,752.89/x
  3. Step 3: Cross multiply
    355,409.38x = 533,141.61 × 118,752.89
  4. Step 4: Simplify right side
    355,409.38x = 63,312,108,299.61
  5. Step 5: Solve for x
    x = 63,312,108,299.61/355,409.38
  6. Step 6: Final answer
    x = 178,138.54

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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.