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Finding the Fourth Proportional to 272,647.40, 376,400.98 and 191,225.64

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Solution

The fourth proportional to 272,647.40, 376,400.98 and 191,225.64 is: 263,994.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,647.40 : 376,400.98 = 191,225.64 : x
  2. Step 2: Convert to fraction form
    272,647.40/376,400.98 = 191,225.64/x
  3. Step 3: Cross multiply
    272,647.40x = 376,400.98 × 191,225.64
  4. Step 4: Simplify right side
    272,647.40x = 71,977,518,297.13
  5. Step 5: Solve for x
    x = 71,977,518,297.13/272,647.40
  6. Step 6: Final answer
    x = 263,994.88

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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.