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Finding the Fourth Proportional to 287,702.91, 397,200.24 and 255,783.60

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Solution

The fourth proportional to 287,702.91, 397,200.24 and 255,783.60 is: 353,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,702.91 : 397,200.24 = 255,783.60 : x
  2. Step 2: Convert to fraction form
    287,702.91/397,200.24 = 255,783.60/x
  3. Step 3: Cross multiply
    287,702.91x = 397,200.24 × 255,783.60
  4. Step 4: Simplify right side
    287,702.91x = 101,597,307,308.06
  5. Step 5: Solve for x
    x = 101,597,307,308.06/287,702.91
  6. Step 6: Final answer
    x = 353,132.71

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1.5x scale

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.