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Finding the Fourth Proportional to 455,595.36, 628,721.64 and 254,391.36

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Solution

The fourth proportional to 455,595.36, 628,721.64 and 254,391.36 is: 351,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,595.36 : 628,721.64 = 254,391.36 : x
  2. Step 2: Convert to fraction form
    455,595.36/628,721.64 = 254,391.36/x
  3. Step 3: Cross multiply
    455,595.36x = 628,721.64 × 254,391.36
  4. Step 4: Simplify right side
    455,595.36x = 159,941,353,061.03
  5. Step 5: Solve for x
    x = 159,941,353,061.03/455,595.36
  6. Step 6: Final answer
    x = 351,060.10

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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.