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Finding the Fourth Proportional to 352,286.40, 528,429.60 and 289,300.80

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Solution

The fourth proportional to 352,286.40, 528,429.60 and 289,300.80 is: 433,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,286.40 : 528,429.60 = 289,300.80 : x
  2. Step 2: Convert to fraction form
    352,286.40/528,429.60 = 289,300.80/x
  3. Step 3: Cross multiply
    352,286.40x = 528,429.60 × 289,300.80
  4. Step 4: Simplify right side
    352,286.40x = 152,875,106,023.68
  5. Step 5: Solve for x
    x = 152,875,106,023.68/352,286.40
  6. Step 6: Final answer
    x = 433,951.20

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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.