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Finding the Fourth Proportional to 478,299.12, 660,052.44 and 263,433.84

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Solution

The fourth proportional to 478,299.12, 660,052.44 and 263,433.84 is: 363,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,299.12 : 660,052.44 = 263,433.84 : x
  2. Step 2: Convert to fraction form
    478,299.12/660,052.44 = 263,433.84/x
  3. Step 3: Cross multiply
    478,299.12x = 660,052.44 × 263,433.84
  4. Step 4: Simplify right side
    478,299.12x = 173,880,148,870.57
  5. Step 5: Solve for x
    x = 173,880,148,870.57/478,299.12
  6. Step 6: Final answer
    x = 363,538.51

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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.