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Finding the Fourth Proportional to 352,154, 528,308.76 and 130,538

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Solution

The fourth proportional to 352,154, 528,308.76 and 130,538 is: 195,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,154 : 528,308.76 = 130,538 : x
  2. Step 2: Convert to fraction form
    352,154/528,308.76 = 130,538/x
  3. Step 3: Cross multiply
    352,154x = 528,308.76 × 130,538
  4. Step 4: Simplify right side
    352,154x = 68,964,368,912.88
  5. Step 5: Solve for x
    x = 68,964,368,912.88/352,154
  6. Step 6: Final answer
    x = 195,835.82

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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.