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Finding the Fourth Proportional to 408,037.80, 612,639.90 and 230,890.80

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Solution

The fourth proportional to 408,037.80, 612,639.90 and 230,890.80 is: 346,666.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,037.80 : 612,639.90 = 230,890.80 : x
  2. Step 2: Convert to fraction form
    408,037.80/612,639.90 = 230,890.80/x
  3. Step 3: Cross multiply
    408,037.80x = 612,639.90 × 230,890.80
  4. Step 4: Simplify right side
    408,037.80x = 141,452,916,622.92
  5. Step 5: Solve for x
    x = 141,452,916,622.92/408,037.80
  6. Step 6: Final answer
    x = 346,666.21

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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.