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Finding the Fourth Proportional to 640,893.34, 961,343.25 and 167,579.74

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Solution

The fourth proportional to 640,893.34, 961,343.25 and 167,579.74 is: 251,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,893.34 : 961,343.25 = 167,579.74 : x
  2. Step 2: Convert to fraction form
    640,893.34/961,343.25 = 167,579.74/x
  3. Step 3: Cross multiply
    640,893.34x = 961,343.25 × 167,579.74
  4. Step 4: Simplify right side
    640,893.34x = 161,101,651,885.76
  5. Step 5: Solve for x
    x = 161,101,651,885.76/640,893.34
  6. Step 6: Final answer
    x = 251,370.46

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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.