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Finding the Fourth Proportional to 469,938.67, 648,498 and 255,074.20

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Solution

The fourth proportional to 469,938.67, 648,498 and 255,074.20 is: 351,992.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,938.67 : 648,498 = 255,074.20 : x
  2. Step 2: Convert to fraction form
    469,938.67/648,498 = 255,074.20/x
  3. Step 3: Cross multiply
    469,938.67x = 648,498 × 255,074.20
  4. Step 4: Simplify right side
    469,938.67x = 165,415,108,551.60
  5. Step 5: Solve for x
    x = 165,415,108,551.60/469,938.67
  6. Step 6: Final answer
    x = 351,992.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.