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Finding the Fourth Proportional to 363,015.30, 545,106.15 and 274,368.90

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Solution

The fourth proportional to 363,015.30, 545,106.15 and 274,368.90 is: 411,994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,015.30 : 545,106.15 = 274,368.90 : x
  2. Step 2: Convert to fraction form
    363,015.30/545,106.15 = 274,368.90/x
  3. Step 3: Cross multiply
    363,015.30x = 545,106.15 × 274,368.90
  4. Step 4: Simplify right side
    363,015.30x = 149,560,174,758.74
  5. Step 5: Solve for x
    x = 149,560,174,758.74/363,015.30
  6. Step 6: Final answer
    x = 411,994.14

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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.