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Finding the Fourth Proportional to 545,312.80, 818,007.60 and 308,768.80

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Solution

The fourth proportional to 545,312.80, 818,007.60 and 308,768.80 is: 463,174.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,312.80 : 818,007.60 = 308,768.80 : x
  2. Step 2: Convert to fraction form
    545,312.80/818,007.60 = 308,768.80/x
  3. Step 3: Cross multiply
    545,312.80x = 818,007.60 × 308,768.80
  4. Step 4: Simplify right side
    545,312.80x = 252,575,225,042.88
  5. Step 5: Solve for x
    x = 252,575,225,042.88/545,312.80
  6. Step 6: Final answer
    x = 463,174.94

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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.