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Finding the Fourth Proportional to 272,538.88, 376,018.99 and 154,646.48

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Solution

The fourth proportional to 272,538.88, 376,018.99 and 154,646.48 is: 213,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,538.88 : 376,018.99 = 154,646.48 : x
  2. Step 2: Convert to fraction form
    272,538.88/376,018.99 = 154,646.48/x
  3. Step 3: Cross multiply
    272,538.88x = 376,018.99 × 154,646.48
  4. Step 4: Simplify right side
    272,538.88x = 58,150,013,216.66
  5. Step 5: Solve for x
    x = 58,150,013,216.66/272,538.88
  6. Step 6: Final answer
    x = 213,364.10

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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.