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Finding the Fourth Proportional to 640,674.84, 961,021.58 and 167,360.25

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Solution

The fourth proportional to 640,674.84, 961,021.58 and 167,360.25 is: 251,042.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,674.84 : 961,021.58 = 167,360.25 : x
  2. Step 2: Convert to fraction form
    640,674.84/961,021.58 = 167,360.25/x
  3. Step 3: Cross multiply
    640,674.84x = 961,021.58 × 167,360.25
  4. Step 4: Simplify right side
    640,674.84x = 160,836,811,047.39
  5. Step 5: Solve for x
    x = 160,836,811,047.39/640,674.84
  6. Step 6: Final answer
    x = 251,042.81

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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.