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Finding the Fourth Proportional to 287,745.30, 431,650.35 and 88,064.10

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Solution

The fourth proportional to 287,745.30, 431,650.35 and 88,064.10 is: 132,106.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,745.30 : 431,650.35 = 88,064.10 : x
  2. Step 2: Convert to fraction form
    287,745.30/431,650.35 = 88,064.10/x
  3. Step 3: Cross multiply
    287,745.30x = 431,650.35 × 88,064.10
  4. Step 4: Simplify right side
    287,745.30x = 38,012,899,587.44
  5. Step 5: Solve for x
    x = 38,012,899,587.44/287,745.30
  6. Step 6: Final answer
    x = 132,106.07

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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.