Home / 320,855.10-442,780.17-175,670.30

Finding the Fourth Proportional to 320,855.10, 442,780.17 and 175,670.30

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Solution

The fourth proportional to 320,855.10, 442,780.17 and 175,670.30 is: 242,425.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,855.10 : 442,780.17 = 175,670.30 : x
  2. Step 2: Convert to fraction form
    320,855.10/442,780.17 = 175,670.30/x
  3. Step 3: Cross multiply
    320,855.10x = 442,780.17 × 175,670.30
  4. Step 4: Simplify right side
    320,855.10x = 77,783,325,297.95
  5. Step 5: Solve for x
    x = 77,783,325,297.95/320,855.10
  6. Step 6: Final answer
    x = 242,425.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.