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Finding the Fourth Proportional to 292,495.89, 403,647 and 171,639.18

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Solution

The fourth proportional to 292,495.89, 403,647 and 171,639.18 is: 236,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,495.89 : 403,647 = 171,639.18 : x
  2. Step 2: Convert to fraction form
    292,495.89/403,647 = 171,639.18/x
  3. Step 3: Cross multiply
    292,495.89x = 403,647 × 171,639.18
  4. Step 4: Simplify right side
    292,495.89x = 69,281,640,089.46
  5. Step 5: Solve for x
    x = 69,281,640,089.46/292,495.89
  6. Step 6: Final answer
    x = 236,863.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.