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Finding the Fourth Proportional to 352,083.20, 528,124.80 and 102,790.40

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Solution

The fourth proportional to 352,083.20, 528,124.80 and 102,790.40 is: 154,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,083.20 : 528,124.80 = 102,790.40 : x
  2. Step 2: Convert to fraction form
    352,083.20/528,124.80 = 102,790.40/x
  3. Step 3: Cross multiply
    352,083.20x = 528,124.80 × 102,790.40
  4. Step 4: Simplify right side
    352,083.20x = 54,286,159,441.92
  5. Step 5: Solve for x
    x = 54,286,159,441.92/352,083.20
  6. Step 6: Final answer
    x = 154,185.60

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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.