Home / 208,217.31-287,340-112,724.04

Finding the Fourth Proportional to 208,217.31, 287,340 and 112,724.04

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Solution

The fourth proportional to 208,217.31, 287,340 and 112,724.04 is: 155,559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,217.31 : 287,340 = 112,724.04 : x
  2. Step 2: Convert to fraction form
    208,217.31/287,340 = 112,724.04/x
  3. Step 3: Cross multiply
    208,217.31x = 287,340 × 112,724.04
  4. Step 4: Simplify right side
    208,217.31x = 32,390,125,653.60
  5. Step 5: Solve for x
    x = 32,390,125,653.60/208,217.31
  6. Step 6: Final answer
    x = 155,559.24

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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.