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Finding the Fourth Proportional to 355,640.40, 533,349.54 and 118,927.80

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Solution

The fourth proportional to 355,640.40, 533,349.54 and 118,927.80 is: 178,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,640.40 : 533,349.54 = 118,927.80 : x
  2. Step 2: Convert to fraction form
    355,640.40/533,349.54 = 118,927.80/x
  3. Step 3: Cross multiply
    355,640.40x = 533,349.54 × 118,927.80
  4. Step 4: Simplify right side
    355,640.40x = 63,430,087,423.21
  5. Step 5: Solve for x
    x = 63,430,087,423.21/355,640.40
  6. Step 6: Final answer
    x = 178,354.56

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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.