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Finding the Fourth Proportional to 368,978.25, 553,457.64 and 102,728.01

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Solution

The fourth proportional to 368,978.25, 553,457.64 and 102,728.01 is: 154,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,978.25 : 553,457.64 = 102,728.01 : x
  2. Step 2: Convert to fraction form
    368,978.25/553,457.64 = 102,728.01/x
  3. Step 3: Cross multiply
    368,978.25x = 553,457.64 × 102,728.01
  4. Step 4: Simplify right side
    368,978.25x = 56,855,601,976.50
  5. Step 5: Solve for x
    x = 56,855,601,976.50/368,978.25
  6. Step 6: Final answer
    x = 154,089.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.