Home / 377,449.12-520,870.20-205,359.76

Finding the Fourth Proportional to 377,449.12, 520,870.20 and 205,359.76

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Solution

The fourth proportional to 377,449.12, 520,870.20 and 205,359.76 is: 283,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,449.12 : 520,870.20 = 205,359.76 : x
  2. Step 2: Convert to fraction form
    377,449.12/520,870.20 = 205,359.76/x
  3. Step 3: Cross multiply
    377,449.12x = 520,870.20 × 205,359.76
  4. Step 4: Simplify right side
    377,449.12x = 106,965,779,263.15
  5. Step 5: Solve for x
    x = 106,965,779,263.15/377,449.12
  6. Step 6: Final answer
    x = 283,391.25

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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.