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Finding the Fourth Proportional to 355,534.31, 533,052.47 and 130,865.60

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Solution

The fourth proportional to 355,534.31, 533,052.47 and 130,865.60 is: 196,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,534.31 : 533,052.47 = 130,865.60 : x
  2. Step 2: Convert to fraction form
    355,534.31/533,052.47 = 130,865.60/x
  3. Step 3: Cross multiply
    355,534.31x = 533,052.47 × 130,865.60
  4. Step 4: Simplify right side
    355,534.31x = 69,758,228,979.93
  5. Step 5: Solve for x
    x = 69,758,228,979.93/355,534.31
  6. Step 6: Final answer
    x = 196,206.75

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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.