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Finding the Fourth Proportional to 351,710.54, 485,359.86 and 190,569.95

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Solution

The fourth proportional to 351,710.54, 485,359.86 and 190,569.95 is: 262,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,710.54 : 485,359.86 = 190,569.95 : x
  2. Step 2: Convert to fraction form
    351,710.54/485,359.86 = 190,569.95/x
  3. Step 3: Cross multiply
    351,710.54x = 485,359.86 × 190,569.95
  4. Step 4: Simplify right side
    351,710.54x = 92,495,001,825.41
  5. Step 5: Solve for x
    x = 92,495,001,825.41/351,710.54
  6. Step 6: Final answer
    x = 262,986.16

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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.