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Finding the Fourth Proportional to 545,855.16, 818,930.97 and 309,363.93

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Solution

The fourth proportional to 545,855.16, 818,930.97 and 309,363.93 is: 464,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,855.16 : 818,930.97 = 309,363.93 : x
  2. Step 2: Convert to fraction form
    545,855.16/818,930.97 = 309,363.93/x
  3. Step 3: Cross multiply
    545,855.16x = 818,930.97 × 309,363.93
  4. Step 4: Simplify right side
    545,855.16x = 253,347,703,277.91
  5. Step 5: Solve for x
    x = 253,347,703,277.91/545,855.16
  6. Step 6: Final answer
    x = 464,129.90

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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.