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Finding the Fourth Proportional to 355,412.20, 533,145.82 and 118,755.70

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Solution

The fourth proportional to 355,412.20, 533,145.82 and 118,755.70 is: 178,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,412.20 : 533,145.82 = 118,755.70 : x
  2. Step 2: Convert to fraction form
    355,412.20/533,145.82 = 118,755.70/x
  3. Step 3: Cross multiply
    355,412.20x = 533,145.82 × 118,755.70
  4. Step 4: Simplify right side
    355,412.20x = 63,314,105,056.17
  5. Step 5: Solve for x
    x = 63,314,105,056.17/355,412.20
  6. Step 6: Final answer
    x = 178,142.75

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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.