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Finding the Fourth Proportional to 353,740.96, 488,004.80 and 238,982.72

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Solution

The fourth proportional to 353,740.96, 488,004.80 and 238,982.72 is: 329,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,740.96 : 488,004.80 = 238,982.72 : x
  2. Step 2: Convert to fraction form
    353,740.96/488,004.80 = 238,982.72/x
  3. Step 3: Cross multiply
    353,740.96x = 488,004.80 × 238,982.72
  4. Step 4: Simplify right side
    353,740.96x = 116,624,714,477.06
  5. Step 5: Solve for x
    x = 116,624,714,477.06/353,740.96
  6. Step 6: Final answer
    x = 329,689.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.