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Finding the Fourth Proportional to 486,938.34, 730,485.99 and 149,978.88

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Solution

The fourth proportional to 486,938.34, 730,485.99 and 149,978.88 is: 224,992.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,938.34 : 730,485.99 = 149,978.88 : x
  2. Step 2: Convert to fraction form
    486,938.34/730,485.99 = 149,978.88/x
  3. Step 3: Cross multiply
    486,938.34x = 730,485.99 × 149,978.88
  4. Step 4: Simplify right side
    486,938.34x = 109,557,470,635.89
  5. Step 5: Solve for x
    x = 109,557,470,635.89/486,938.34
  6. Step 6: Final answer
    x = 224,992.49

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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.