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Finding the Fourth Proportional to 553,853.84, 764,354.32 and 308,866.24

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Solution

The fourth proportional to 553,853.84, 764,354.32 and 308,866.24 is: 426,255.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,853.84 : 764,354.32 = 308,866.24 : x
  2. Step 2: Convert to fraction form
    553,853.84/764,354.32 = 308,866.24/x
  3. Step 3: Cross multiply
    553,853.84x = 764,354.32 × 308,866.24
  4. Step 4: Simplify right side
    553,853.84x = 236,083,244,846.16
  5. Step 5: Solve for x
    x = 236,083,244,846.16/553,853.84
  6. Step 6: Final answer
    x = 426,255.50

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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.