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Finding the Fourth Proportional to 351,802.71, 485,489.48 and 190,657.77

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Solution

The fourth proportional to 351,802.71, 485,489.48 and 190,657.77 is: 263,108.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,802.71 : 485,489.48 = 190,657.77 : x
  2. Step 2: Convert to fraction form
    351,802.71/485,489.48 = 190,657.77/x
  3. Step 3: Cross multiply
    351,802.71x = 485,489.48 × 190,657.77
  4. Step 4: Simplify right side
    351,802.71x = 92,562,338,841.39
  5. Step 5: Solve for x
    x = 92,562,338,841.39/351,802.71
  6. Step 6: Final answer
    x = 263,108.66

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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.