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Finding the Fourth Proportional to 270,654.40, 405,981.60 and 112,830.40

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Solution

The fourth proportional to 270,654.40, 405,981.60 and 112,830.40 is: 169,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,654.40 : 405,981.60 = 112,830.40 : x
  2. Step 2: Convert to fraction form
    270,654.40/405,981.60 = 112,830.40/x
  3. Step 3: Cross multiply
    270,654.40x = 405,981.60 × 112,830.40
  4. Step 4: Simplify right side
    270,654.40x = 45,807,066,320.64
  5. Step 5: Solve for x
    x = 45,807,066,320.64/270,654.40
  6. Step 6: Final answer
    x = 169,245.60

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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.