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Finding the Fourth Proportional to 429,137.59, 644,130.12 and 322,149.55

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Solution

The fourth proportional to 429,137.59, 644,130.12 and 322,149.55 is: 483,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,137.59 : 644,130.12 = 322,149.55 : x
  2. Step 2: Convert to fraction form
    429,137.59/644,130.12 = 322,149.55/x
  3. Step 3: Cross multiply
    429,137.59x = 644,130.12 × 322,149.55
  4. Step 4: Simplify right side
    429,137.59x = 207,506,228,299.45
  5. Step 5: Solve for x
    x = 207,506,228,299.45/429,137.59
  6. Step 6: Final answer
    x = 483,542.42

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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.