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Finding the Fourth Proportional to 320,702.49, 480,911.58 and 170,914.86

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Solution

The fourth proportional to 320,702.49, 480,911.58 and 170,914.86 is: 256,296.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,702.49 : 480,911.58 = 170,914.86 : x
  2. Step 2: Convert to fraction form
    320,702.49/480,911.58 = 170,914.86/x
  3. Step 3: Cross multiply
    320,702.49x = 480,911.58 × 170,914.86
  4. Step 4: Simplify right side
    320,702.49x = 82,194,935,368.08
  5. Step 5: Solve for x
    x = 82,194,935,368.08/320,702.49
  6. Step 6: Final answer
    x = 256,296.53

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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.