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Finding the Fourth Proportional to 458,443.40, 632,620.18 and 254,478.28

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Solution

The fourth proportional to 458,443.40, 632,620.18 and 254,478.28 is: 351,162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,443.40 : 632,620.18 = 254,478.28 : x
  2. Step 2: Convert to fraction form
    458,443.40/632,620.18 = 254,478.28/x
  3. Step 3: Cross multiply
    458,443.40x = 632,620.18 × 254,478.28
  4. Step 4: Simplify right side
    458,443.40x = 160,988,095,299.69
  5. Step 5: Solve for x
    x = 160,988,095,299.69/458,443.40
  6. Step 6: Final answer
    x = 351,162.42

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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.