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Finding the Fourth Proportional to 272,368.88, 408,809.28 and 142,630.80

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Solution

The fourth proportional to 272,368.88, 408,809.28 and 142,630.80 is: 214,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,368.88 : 408,809.28 = 142,630.80 : x
  2. Step 2: Convert to fraction form
    272,368.88/408,809.28 = 142,630.80/x
  3. Step 3: Cross multiply
    272,368.88x = 408,809.28 × 142,630.80
  4. Step 4: Simplify right side
    272,368.88x = 58,308,794,653.82
  5. Step 5: Solve for x
    x = 58,308,794,653.82/272,368.88
  6. Step 6: Final answer
    x = 214,080.24

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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.