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Finding the Fourth Proportional to 545,090.80, 817,672.65 and 185,256.40

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Solution

The fourth proportional to 545,090.80, 817,672.65 and 185,256.40 is: 277,896.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,090.80 : 817,672.65 = 185,256.40 : x
  2. Step 2: Convert to fraction form
    545,090.80/817,672.65 = 185,256.40/x
  3. Step 3: Cross multiply
    545,090.80x = 817,672.65 × 185,256.40
  4. Step 4: Simplify right side
    545,090.80x = 151,479,091,517.46
  5. Step 5: Solve for x
    x = 151,479,091,517.46/545,090.80
  6. Step 6: Final answer
    x = 277,896.99

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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.