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Finding the Fourth Proportional to 545,185.49, 818,128.15 and 264,549.65

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Solution

The fourth proportional to 545,185.49, 818,128.15 and 264,549.65 is: 396,994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,185.49 : 818,128.15 = 264,549.65 : x
  2. Step 2: Convert to fraction form
    545,185.49/818,128.15 = 264,549.65/x
  3. Step 3: Cross multiply
    545,185.49x = 818,128.15 × 264,549.65
  4. Step 4: Simplify right side
    545,185.49x = 216,435,510,985.63
  5. Step 5: Solve for x
    x = 216,435,510,985.63/545,185.49
  6. Step 6: Final answer
    x = 396,994.27

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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.