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Finding the Fourth Proportional to 368,311.52, 552,477.96 and 143,662.88

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Solution

The fourth proportional to 368,311.52, 552,477.96 and 143,662.88 is: 215,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,311.52 : 552,477.96 = 143,662.88 : x
  2. Step 2: Convert to fraction form
    368,311.52/552,477.96 = 143,662.88/x
  3. Step 3: Cross multiply
    368,311.52x = 552,477.96 × 143,662.88
  4. Step 4: Simplify right side
    368,311.52x = 79,370,574,870.12
  5. Step 5: Solve for x
    x = 79,370,574,870.12/368,311.52
  6. Step 6: Final answer
    x = 215,498.49

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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.