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Finding the Fourth Proportional to 303,185.68, 454,779.86 and 78,530.16

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Solution

The fourth proportional to 303,185.68, 454,779.86 and 78,530.16 is: 117,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,185.68 : 454,779.86 = 78,530.16 : x
  2. Step 2: Convert to fraction form
    303,185.68/454,779.86 = 78,530.16/x
  3. Step 3: Cross multiply
    303,185.68x = 454,779.86 × 78,530.16
  4. Step 4: Simplify right side
    303,185.68x = 35,713,935,170.58
  5. Step 5: Solve for x
    x = 35,713,935,170.58/303,185.68
  6. Step 6: Final answer
    x = 117,795.59

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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.