Home / 208,442.72-312,702.96-68,209.04

Finding the Fourth Proportional to 208,442.72, 312,702.96 and 68,209.04

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Solution

The fourth proportional to 208,442.72, 312,702.96 and 68,209.04 is: 102,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,442.72 : 312,702.96 = 68,209.04 : x
  2. Step 2: Convert to fraction form
    208,442.72/312,702.96 = 68,209.04/x
  3. Step 3: Cross multiply
    208,442.72x = 312,702.96 × 68,209.04
  4. Step 4: Simplify right side
    208,442.72x = 21,329,168,706.76
  5. Step 5: Solve for x
    x = 21,329,168,706.76/208,442.72
  6. Step 6: Final answer
    x = 102,326.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.