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Finding the Fourth Proportional to 356,257.80, 534,473.10 and 251,281.80

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Solution

The fourth proportional to 356,257.80, 534,473.10 and 251,281.80 is: 376,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,257.80 : 534,473.10 = 251,281.80 : x
  2. Step 2: Convert to fraction form
    356,257.80/534,473.10 = 251,281.80/x
  3. Step 3: Cross multiply
    356,257.80x = 534,473.10 × 251,281.80
  4. Step 4: Simplify right side
    356,257.80x = 134,303,362,619.58
  5. Step 5: Solve for x
    x = 134,303,362,619.58/356,257.80
  6. Step 6: Final answer
    x = 376,983.64

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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.