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Finding the Fourth Proportional to 303,900.96, 455,985.08 and 161,712.72

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Solution

The fourth proportional to 303,900.96, 455,985.08 and 161,712.72 is: 242,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,900.96 : 455,985.08 = 161,712.72 : x
  2. Step 2: Convert to fraction form
    303,900.96/455,985.08 = 161,712.72/x
  3. Step 3: Cross multiply
    303,900.96x = 455,985.08 × 161,712.72
  4. Step 4: Simplify right side
    303,900.96x = 73,738,587,566.22
  5. Step 5: Solve for x
    x = 73,738,587,566.22/303,900.96
  6. Step 6: Final answer
    x = 242,640.19

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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.