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Finding the Fourth Proportional to 255,354.72, 383,207.04 and 89,142.72

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Solution

The fourth proportional to 255,354.72, 383,207.04 and 89,142.72 is: 133,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,354.72 : 383,207.04 = 89,142.72 : x
  2. Step 2: Convert to fraction form
    255,354.72/383,207.04 = 89,142.72/x
  3. Step 3: Cross multiply
    255,354.72x = 383,207.04 × 89,142.72
  4. Step 4: Simplify right side
    255,354.72x = 34,160,117,868.75
  5. Step 5: Solve for x
    x = 34,160,117,868.75/255,354.72
  6. Step 6: Final answer
    x = 133,775.16

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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.