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Finding the Fourth Proportional to 208,586.54, 287,851.63 and 122,549.12

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Solution

The fourth proportional to 208,586.54, 287,851.63 and 122,549.12 is: 169,119.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,586.54 : 287,851.63 = 122,549.12 : x
  2. Step 2: Convert to fraction form
    208,586.54/287,851.63 = 122,549.12/x
  3. Step 3: Cross multiply
    208,586.54x = 287,851.63 × 122,549.12
  4. Step 4: Simplify right side
    208,586.54x = 35,275,963,947.07
  5. Step 5: Solve for x
    x = 35,275,963,947.07/208,586.54
  6. Step 6: Final answer
    x = 169,119.08

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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.