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Finding the Fourth Proportional to 377,271.80, 520,709.05 and 216,234.78

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Solution

The fourth proportional to 377,271.80, 520,709.05 and 216,234.78 is: 298,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,271.80 : 520,709.05 = 216,234.78 : x
  2. Step 2: Convert to fraction form
    377,271.80/520,709.05 = 216,234.78/x
  3. Step 3: Cross multiply
    377,271.80x = 520,709.05 × 216,234.78
  4. Step 4: Simplify right side
    377,271.80x = 112,595,406,870.76
  5. Step 5: Solve for x
    x = 112,595,406,870.76/377,271.80
  6. Step 6: Final answer
    x = 298,446.39

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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.