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Finding the Fourth Proportional to 640,950.73, 961,352.66 and 167,681.77

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Solution

The fourth proportional to 640,950.73, 961,352.66 and 167,681.77 is: 251,503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,950.73 : 961,352.66 = 167,681.77 : x
  2. Step 2: Convert to fraction form
    640,950.73/961,352.66 = 167,681.77/x
  3. Step 3: Cross multiply
    640,950.73x = 961,352.66 × 167,681.77
  4. Step 4: Simplify right side
    640,950.73x = 161,201,314,784.60
  5. Step 5: Solve for x
    x = 161,201,314,784.60/640,950.73
  6. Step 6: Final answer
    x = 251,503.44

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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.