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Finding the Fourth Proportional to 353,630.76, 488,051.95 and 198,607.47

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Solution

The fourth proportional to 353,630.76, 488,051.95 and 198,607.47 is: 274,101.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,630.76 : 488,051.95 = 198,607.47 : x
  2. Step 2: Convert to fraction form
    353,630.76/488,051.95 = 198,607.47/x
  3. Step 3: Cross multiply
    353,630.76x = 488,051.95 × 198,607.47
  4. Step 4: Simplify right side
    353,630.76x = 96,930,763,018.07
  5. Step 5: Solve for x
    x = 96,930,763,018.07/353,630.76
  6. Step 6: Final answer
    x = 274,101.62

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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.