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Finding the Fourth Proportional to 353,783.40, 487,390.74 and 246,168.36

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Solution

The fourth proportional to 353,783.40, 487,390.74 and 246,168.36 is: 339,134.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,783.40 : 487,390.74 = 246,168.36 : x
  2. Step 2: Convert to fraction form
    353,783.40/487,390.74 = 246,168.36/x
  3. Step 3: Cross multiply
    353,783.40x = 487,390.74 × 246,168.36
  4. Step 4: Simplify right side
    353,783.40x = 119,980,179,144.99
  5. Step 5: Solve for x
    x = 119,980,179,144.99/353,783.40
  6. Step 6: Final answer
    x = 339,134.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.