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Finding the Fourth Proportional to 355,855.20, 533,977.20 and 145,514.40

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Solution

The fourth proportional to 355,855.20, 533,977.20 and 145,514.40 is: 218,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,855.20 : 533,977.20 = 145,514.40 : x
  2. Step 2: Convert to fraction form
    355,855.20/533,977.20 = 145,514.40/x
  3. Step 3: Cross multiply
    355,855.20x = 533,977.20 × 145,514.40
  4. Step 4: Simplify right side
    355,855.20x = 77,701,371,871.68
  5. Step 5: Solve for x
    x = 77,701,371,871.68/355,855.20
  6. Step 6: Final answer
    x = 218,351.09

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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.