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Finding the Fourth Proportional to 287,505.60, 431,330.40 and 110,026.56

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Solution

The fourth proportional to 287,505.60, 431,330.40 and 110,026.56 is: 165,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,505.60 : 431,330.40 = 110,026.56 : x
  2. Step 2: Convert to fraction form
    287,505.60/431,330.40 = 110,026.56/x
  3. Step 3: Cross multiply
    287,505.60x = 431,330.40 × 110,026.56
  4. Step 4: Simplify right side
    287,505.60x = 47,457,800,135.42
  5. Step 5: Solve for x
    x = 47,457,800,135.42/287,505.60
  6. Step 6: Final answer
    x = 165,067.39

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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.