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Finding the Fourth Proportional to 404,643.75, 606,994.80 and 155,325.75

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Solution

The fourth proportional to 404,643.75, 606,994.80 and 155,325.75 is: 232,999.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.75 : 606,994.80 = 155,325.75 : x
  2. Step 2: Convert to fraction form
    404,643.75/606,994.80 = 155,325.75/x
  3. Step 3: Cross multiply
    404,643.75x = 606,994.80 × 155,325.75
  4. Step 4: Simplify right side
    404,643.75x = 94,281,922,556.10
  5. Step 5: Solve for x
    x = 94,281,922,556.10/404,643.75
  6. Step 6: Final answer
    x = 232,999.82

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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.