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Finding the Fourth Proportional to 455,769.02, 628,950.75 and 251,809.40

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Solution

The fourth proportional to 455,769.02, 628,950.75 and 251,809.40 is: 347,491.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,769.02 : 628,950.75 = 251,809.40 : x
  2. Step 2: Convert to fraction form
    455,769.02/628,950.75 = 251,809.40/x
  3. Step 3: Cross multiply
    455,769.02x = 628,950.75 × 251,809.40
  4. Step 4: Simplify right side
    455,769.02x = 158,375,710,987.05
  5. Step 5: Solve for x
    x = 158,375,710,987.05/455,769.02
  6. Step 6: Final answer
    x = 347,491.17

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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.