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Finding the Fourth Proportional to 356,855.80, 534,830.10 and 146,255.80

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Solution

The fourth proportional to 356,855.80, 534,830.10 and 146,255.80 is: 219,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,855.80 : 534,830.10 = 146,255.80 : x
  2. Step 2: Convert to fraction form
    356,855.80/534,830.10 = 146,255.80/x
  3. Step 3: Cross multiply
    356,855.80x = 534,830.10 × 146,255.80
  4. Step 4: Simplify right side
    356,855.80x = 78,222,004,139.58
  5. Step 5: Solve for x
    x = 78,222,004,139.58/356,855.80
  6. Step 6: Final answer
    x = 219,197.79

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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.