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Finding the Fourth Proportional to 388,077, 535,546.13 and 218,311.13

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Solution

The fourth proportional to 388,077, 535,546.13 and 218,311.13 is: 301,269.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,077 : 535,546.13 = 218,311.13 : x
  2. Step 2: Convert to fraction form
    388,077/535,546.13 = 218,311.13/x
  3. Step 3: Cross multiply
    388,077x = 535,546.13 × 218,311.13
  4. Step 4: Simplify right side
    388,077x = 116,915,677,038.14
  5. Step 5: Solve for x
    x = 116,915,677,038.14/388,077
  6. Step 6: Final answer
    x = 301,269.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.