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Finding the Fourth Proportional to 309,329.52, 463,994.49 and 84,691.80

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Solution

The fourth proportional to 309,329.52, 463,994.49 and 84,691.80 is: 127,037.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,329.52 : 463,994.49 = 84,691.80 : x
  2. Step 2: Convert to fraction form
    309,329.52/463,994.49 = 84,691.80/x
  3. Step 3: Cross multiply
    309,329.52x = 463,994.49 × 84,691.80
  4. Step 4: Simplify right side
    309,329.52x = 39,296,528,548.18
  5. Step 5: Solve for x
    x = 39,296,528,548.18/309,329.52
  6. Step 6: Final answer
    x = 127,037.76

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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.