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Finding the Fourth Proportional to 275,539.76, 380,244.72 and 154,681.28

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Solution

The fourth proportional to 275,539.76, 380,244.72 and 154,681.28 is: 213,460.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,539.76 : 380,244.72 = 154,681.28 : x
  2. Step 2: Convert to fraction form
    275,539.76/380,244.72 = 154,681.28/x
  3. Step 3: Cross multiply
    275,539.76x = 380,244.72 × 154,681.28
  4. Step 4: Simplify right side
    275,539.76x = 58,816,740,002.84
  5. Step 5: Solve for x
    x = 58,816,740,002.84/275,539.76
  6. Step 6: Final answer
    x = 213,460.08

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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.