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Finding the Fourth Proportional to 272,702.40, 408,907.80 and 114,752.40

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Solution

The fourth proportional to 272,702.40, 408,907.80 and 114,752.40 is: 172,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,702.40 : 408,907.80 = 114,752.40 : x
  2. Step 2: Convert to fraction form
    272,702.40/408,907.80 = 114,752.40/x
  3. Step 3: Cross multiply
    272,702.40x = 408,907.80 × 114,752.40
  4. Step 4: Simplify right side
    272,702.40x = 46,923,151,428.72
  5. Step 5: Solve for x
    x = 46,923,151,428.72/272,702.40
  6. Step 6: Final answer
    x = 172,067.25

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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.