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Finding the Fourth Proportional to 397,655.85, 548,748.63 and 216,368.49

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Solution

The fourth proportional to 397,655.85, 548,748.63 and 216,368.49 is: 298,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,655.85 : 548,748.63 = 216,368.49 : x
  2. Step 2: Convert to fraction form
    397,655.85/548,748.63 = 216,368.49/x
  3. Step 3: Cross multiply
    397,655.85x = 548,748.63 × 216,368.49
  4. Step 4: Simplify right side
    397,655.85x = 118,731,912,462.67
  5. Step 5: Solve for x
    x = 118,731,912,462.67/397,655.85
  6. Step 6: Final answer
    x = 298,579.57

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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.