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Finding the Fourth Proportional to 436,255, 654,390.70 and 136,728.96

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Solution

The fourth proportional to 436,255, 654,390.70 and 136,728.96 is: 205,096.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,255 : 654,390.70 = 136,728.96 : x
  2. Step 2: Convert to fraction form
    436,255/654,390.70 = 136,728.96/x
  3. Step 3: Cross multiply
    436,255x = 654,390.70 × 136,728.96
  4. Step 4: Simplify right side
    436,255x = 89,474,159,844.67
  5. Step 5: Solve for x
    x = 89,474,159,844.67/436,255
  6. Step 6: Final answer
    x = 205,096.01

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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.