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Finding the Fourth Proportional to 389,046.84, 536,888.74 and 219,280.96

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Solution

The fourth proportional to 389,046.84, 536,888.74 and 219,280.96 is: 302,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,046.84 : 536,888.74 = 219,280.96 : x
  2. Step 2: Convert to fraction form
    389,046.84/536,888.74 = 219,280.96/x
  3. Step 3: Cross multiply
    389,046.84x = 536,888.74 × 219,280.96
  4. Step 4: Simplify right side
    389,046.84x = 117,729,478,320.39
  5. Step 5: Solve for x
    x = 117,729,478,320.39/389,046.84
  6. Step 6: Final answer
    x = 302,610.04

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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.