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Finding the Fourth Proportional to 255,318.72, 383,153.04 and 89,106.72

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Solution

The fourth proportional to 255,318.72, 383,153.04 and 89,106.72 is: 133,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,318.72 : 383,153.04 = 89,106.72 : x
  2. Step 2: Convert to fraction form
    255,318.72/383,153.04 = 89,106.72/x
  3. Step 3: Cross multiply
    255,318.72x = 383,153.04 × 89,106.72
  4. Step 4: Simplify right side
    255,318.72x = 34,141,510,652.43
  5. Step 5: Solve for x
    x = 34,141,510,652.43/255,318.72
  6. Step 6: Final answer
    x = 133,721.14

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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.