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Finding the Fourth Proportional to 368,961.89, 553,433.11 and 102,740.81

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Solution

The fourth proportional to 368,961.89, 553,433.11 and 102,740.81 is: 154,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,961.89 : 553,433.11 = 102,740.81 : x
  2. Step 2: Convert to fraction form
    368,961.89/553,433.11 = 102,740.81/x
  3. Step 3: Cross multiply
    368,961.89x = 553,433.11 × 102,740.81
  4. Step 4: Simplify right side
    368,961.89x = 56,860,162,978.20
  5. Step 5: Solve for x
    x = 56,860,162,978.20/368,961.89
  6. Step 6: Final answer
    x = 154,108.50

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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.