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Finding the Fourth Proportional to 404,811.07, 607,218.69 and 168,154

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Solution

The fourth proportional to 404,811.07, 607,218.69 and 168,154 is: 252,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,811.07 : 607,218.69 = 168,154 : x
  2. Step 2: Convert to fraction form
    404,811.07/607,218.69 = 168,154/x
  3. Step 3: Cross multiply
    404,811.07x = 607,218.69 × 168,154
  4. Step 4: Simplify right side
    404,811.07x = 102,106,251,598.26
  5. Step 5: Solve for x
    x = 102,106,251,598.26/404,811.07
  6. Step 6: Final answer
    x = 252,231.87

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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.