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Finding the Fourth Proportional to 286,542.28, 429,813.42 and 89,550.28

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Solution

The fourth proportional to 286,542.28, 429,813.42 and 89,550.28 is: 134,325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,542.28 : 429,813.42 = 89,550.28 : x
  2. Step 2: Convert to fraction form
    286,542.28/429,813.42 = 89,550.28/x
  3. Step 3: Cross multiply
    286,542.28x = 429,813.42 × 89,550.28
  4. Step 4: Simplify right side
    286,542.28x = 38,489,912,108.76
  5. Step 5: Solve for x
    x = 38,489,912,108.76/286,542.28
  6. Step 6: Final answer
    x = 134,325.42

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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.