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Finding the Fourth Proportional to 640,895.66, 961,398.36 and 167,580.26

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Solution

The fourth proportional to 640,895.66, 961,398.36 and 167,580.26 is: 251,384.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,895.66 : 961,398.36 = 167,580.26 : x
  2. Step 2: Convert to fraction form
    640,895.66/961,398.36 = 167,580.26/x
  3. Step 3: Cross multiply
    640,895.66x = 961,398.36 × 167,580.26
  4. Step 4: Simplify right side
    640,895.66x = 161,111,387,132.37
  5. Step 5: Solve for x
    x = 161,111,387,132.37/640,895.66
  6. Step 6: Final answer
    x = 251,384.74

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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.