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Finding the Fourth Proportional to 355,437.91, 533,156.87 and 118,780.59

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Solution

The fourth proportional to 355,437.91, 533,156.87 and 118,780.59 is: 178,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,437.91 : 533,156.87 = 118,780.59 : x
  2. Step 2: Convert to fraction form
    355,437.91/533,156.87 = 118,780.59/x
  3. Step 3: Cross multiply
    355,437.91x = 533,156.87 × 118,780.59
  4. Step 4: Simplify right side
    355,437.91x = 63,328,688,914.05
  5. Step 5: Solve for x
    x = 63,328,688,914.05/355,437.91
  6. Step 6: Final answer
    x = 178,170.89

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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.