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Finding the Fourth Proportional to 381,845.80, 572,768.70 and 358,226.20

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Solution

The fourth proportional to 381,845.80, 572,768.70 and 358,226.20 is: 537,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,845.80 : 572,768.70 = 358,226.20 : x
  2. Step 2: Convert to fraction form
    381,845.80/572,768.70 = 358,226.20/x
  3. Step 3: Cross multiply
    381,845.80x = 572,768.70 × 358,226.20
  4. Step 4: Simplify right side
    381,845.80x = 205,180,754,879.94
  5. Step 5: Solve for x
    x = 205,180,754,879.94/381,845.80
  6. Step 6: Final answer
    x = 537,339.30

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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.