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Finding the Fourth Proportional to 170,858.60, 256,211.10 and 65,642.60

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Solution

The fourth proportional to 170,858.60, 256,211.10 and 65,642.60 is: 98,434.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,858.60 : 256,211.10 = 65,642.60 : x
  2. Step 2: Convert to fraction form
    170,858.60/256,211.10 = 65,642.60/x
  3. Step 3: Cross multiply
    170,858.60x = 256,211.10 × 65,642.60
  4. Step 4: Simplify right side
    170,858.60x = 16,818,362,752.86
  5. Step 5: Solve for x
    x = 16,818,362,752.86/170,858.60
  6. Step 6: Final answer
    x = 98,434.39

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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.