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Finding the Fourth Proportional to 377,455.68, 520,910.88 and 216,360.64

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Solution

The fourth proportional to 377,455.68, 520,910.88 and 216,360.64 is: 298,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,455.68 : 520,910.88 = 216,360.64 : x
  2. Step 2: Convert to fraction form
    377,455.68/520,910.88 = 216,360.64/x
  3. Step 3: Cross multiply
    377,455.68x = 520,910.88 × 216,360.64
  4. Step 4: Simplify right side
    377,455.68x = 112,704,611,379.76
  5. Step 5: Solve for x
    x = 112,704,611,379.76/377,455.68
  6. Step 6: Final answer
    x = 298,590.32

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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.