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Finding the Fourth Proportional to 289,054.80, 403,743.60 and 289,054.80

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Solution

The fourth proportional to 289,054.80, 403,743.60 and 289,054.80 is: 403,743.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,054.80 : 403,743.60 = 289,054.80 : x
  2. Step 2: Convert to fraction form
    289,054.80/403,743.60 = 289,054.80/x
  3. Step 3: Cross multiply
    289,054.80x = 403,743.60 × 289,054.80
  4. Step 4: Simplify right side
    289,054.80x = 116,704,025,549.28
  5. Step 5: Solve for x
    x = 116,704,025,549.28/289,054.80
  6. Step 6: Final answer
    x = 403,743.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.