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Finding the Fourth Proportional to 425,154.54, 637,768.53 and 109,608.78

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Solution

The fourth proportional to 425,154.54, 637,768.53 and 109,608.78 is: 164,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,154.54 : 637,768.53 = 109,608.78 : x
  2. Step 2: Convert to fraction form
    425,154.54/637,768.53 = 109,608.78/x
  3. Step 3: Cross multiply
    425,154.54x = 637,768.53 × 109,608.78
  4. Step 4: Simplify right side
    425,154.54x = 69,905,030,495.69
  5. Step 5: Solve for x
    x = 69,905,030,495.69/425,154.54
  6. Step 6: Final answer
    x = 164,422.64

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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.