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Finding the Fourth Proportional to 383,885.10, 575,932.27 and 117,639.72

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Solution

The fourth proportional to 383,885.10, 575,932.27 and 117,639.72 is: 176,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,885.10 : 575,932.27 = 117,639.72 : x
  2. Step 2: Convert to fraction form
    383,885.10/575,932.27 = 117,639.72/x
  3. Step 3: Cross multiply
    383,885.10x = 575,932.27 × 117,639.72
  4. Step 4: Simplify right side
    383,885.10x = 67,752,510,981.76
  5. Step 5: Solve for x
    x = 67,752,510,981.76/383,885.10
  6. Step 6: Final answer
    x = 176,491.64

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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.