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Finding the Fourth Proportional to 287,662.80, 431,332.20 and 110,175.60

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Solution

The fourth proportional to 287,662.80, 431,332.20 and 110,175.60 is: 165,201.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,662.80 : 431,332.20 = 110,175.60 : x
  2. Step 2: Convert to fraction form
    287,662.80/431,332.20 = 110,175.60/x
  3. Step 3: Cross multiply
    287,662.80x = 431,332.20 × 110,175.60
  4. Step 4: Simplify right side
    287,662.80x = 47,522,283,934.32
  5. Step 5: Solve for x
    x = 47,522,283,934.32/287,662.80
  6. Step 6: Final answer
    x = 165,201.35

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1.5x scale

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.