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Finding the Fourth Proportional to 455,015.13, 627,920.88 and 253,811.13

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Solution

The fourth proportional to 455,015.13, 627,920.88 and 253,811.13 is: 350,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,015.13 : 627,920.88 = 253,811.13 : x
  2. Step 2: Convert to fraction form
    455,015.13/627,920.88 = 253,811.13/x
  3. Step 3: Cross multiply
    455,015.13x = 627,920.88 × 253,811.13
  4. Step 4: Simplify right side
    455,015.13x = 159,373,303,694.73
  5. Step 5: Solve for x
    x = 159,373,303,694.73/455,015.13
  6. Step 6: Final answer
    x = 350,259.35

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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.