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Finding the Fourth Proportional to 377,406.28, 520,820.64 and 207,636.76

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Solution

The fourth proportional to 377,406.28, 520,820.64 and 207,636.76 is: 286,538.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,406.28 : 520,820.64 = 207,636.76 : x
  2. Step 2: Convert to fraction form
    377,406.28/520,820.64 = 207,636.76/x
  3. Step 3: Cross multiply
    377,406.28x = 520,820.64 × 207,636.76
  4. Step 4: Simplify right side
    377,406.28x = 108,141,510,230.73
  5. Step 5: Solve for x
    x = 108,141,510,230.73/377,406.28
  6. Step 6: Final answer
    x = 286,538.71

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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.