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Finding the Fourth Proportional to 389,798.82, 537,922.36 and 210,950.82

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Solution

The fourth proportional to 389,798.82, 537,922.36 and 210,950.82 is: 291,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,798.82 : 537,922.36 = 210,950.82 : x
  2. Step 2: Convert to fraction form
    389,798.82/537,922.36 = 210,950.82/x
  3. Step 3: Cross multiply
    389,798.82x = 537,922.36 × 210,950.82
  4. Step 4: Simplify right side
    389,798.82x = 113,475,162,938.34
  5. Step 5: Solve for x
    x = 113,475,162,938.34/389,798.82
  6. Step 6: Final answer
    x = 291,112.13

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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.