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Finding the Fourth Proportional to 378,616.60, 567,924.90 and 355,521.88

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Solution

The fourth proportional to 378,616.60, 567,924.90 and 355,521.88 is: 533,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,616.60 : 567,924.90 = 355,521.88 : x
  2. Step 2: Convert to fraction form
    378,616.60/567,924.90 = 355,521.88/x
  3. Step 3: Cross multiply
    378,616.60x = 567,924.90 × 355,521.88
  4. Step 4: Simplify right side
    378,616.60x = 201,909,728,146.81
  5. Step 5: Solve for x
    x = 201,909,728,146.81/378,616.60
  6. Step 6: Final answer
    x = 533,282.82

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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.