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Finding the Fourth Proportional to 287,241.60, 431,059.20 and 100,253.10

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Solution

The fourth proportional to 287,241.60, 431,059.20 and 100,253.10 is: 150,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,241.60 : 431,059.20 = 100,253.10 : x
  2. Step 2: Convert to fraction form
    287,241.60/431,059.20 = 100,253.10/x
  3. Step 3: Cross multiply
    287,241.60x = 431,059.20 × 100,253.10
  4. Step 4: Simplify right side
    287,241.60x = 43,215,021,083.52
  5. Step 5: Solve for x
    x = 43,215,021,083.52/287,241.60
  6. Step 6: Final answer
    x = 150,448.34

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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.