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Finding the Fourth Proportional to 287,466.10, 431,122.35 and 100,458.10

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Solution

The fourth proportional to 287,466.10, 431,122.35 and 100,458.10 is: 150,660.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,466.10 : 431,122.35 = 100,458.10 : x
  2. Step 2: Convert to fraction form
    287,466.10/431,122.35 = 100,458.10/x
  3. Step 3: Cross multiply
    287,466.10x = 431,122.35 × 100,458.10
  4. Step 4: Simplify right side
    287,466.10x = 43,309,732,148.54
  5. Step 5: Solve for x
    x = 43,309,732,148.54/287,466.10
  6. Step 6: Final answer
    x = 150,660.31

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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.