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Finding the Fourth Proportional to 545,549.42, 818,273.64 and 257,294.97

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Solution

The fourth proportional to 545,549.42, 818,273.64 and 257,294.97 is: 385,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,549.42 : 818,273.64 = 257,294.97 : x
  2. Step 2: Convert to fraction form
    545,549.42/818,273.64 = 257,294.97/x
  3. Step 3: Cross multiply
    545,549.42x = 818,273.64 × 257,294.97
  4. Step 4: Simplify right side
    545,549.42x = 210,537,691,655.59
  5. Step 5: Solve for x
    x = 210,537,691,655.59/545,549.42
  6. Step 6: Final answer
    x = 385,918.64

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1.5x scale

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.