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Finding the Fourth Proportional to 363,313.06, 545,006.75 and 138,862.42

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Solution

The fourth proportional to 363,313.06, 545,006.75 and 138,862.42 is: 208,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,313.06 : 545,006.75 = 138,862.42 : x
  2. Step 2: Convert to fraction form
    363,313.06/545,006.75 = 138,862.42/x
  3. Step 3: Cross multiply
    363,313.06x = 545,006.75 × 138,862.42
  4. Step 4: Simplify right side
    363,313.06x = 75,680,954,164.51
  5. Step 5: Solve for x
    x = 75,680,954,164.51/363,313.06
  6. Step 6: Final answer
    x = 208,307.83

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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.