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Finding the Fourth Proportional to 436,425.42, 654,636.87 and 136,905.69

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Solution

The fourth proportional to 436,425.42, 654,636.87 and 136,905.69 is: 205,358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,425.42 : 654,636.87 = 136,905.69 : x
  2. Step 2: Convert to fraction form
    436,425.42/654,636.87 = 136,905.69/x
  3. Step 3: Cross multiply
    436,425.42x = 654,636.87 × 136,905.69
  4. Step 4: Simplify right side
    436,425.42x = 89,623,512,386.79
  5. Step 5: Solve for x
    x = 89,623,512,386.79/436,425.42
  6. Step 6: Final answer
    x = 205,358.14

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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.