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Finding the Fourth Proportional to 364,043.80, 546,065.70 and 287,936.20

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Solution

The fourth proportional to 364,043.80, 546,065.70 and 287,936.20 is: 431,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,043.80 : 546,065.70 = 287,936.20 : x
  2. Step 2: Convert to fraction form
    364,043.80/546,065.70 = 287,936.20/x
  3. Step 3: Cross multiply
    364,043.80x = 546,065.70 × 287,936.20
  4. Step 4: Simplify right side
    364,043.80x = 157,232,082,608.34
  5. Step 5: Solve for x
    x = 157,232,082,608.34/364,043.80
  6. Step 6: Final answer
    x = 431,904.30

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Similar ratio
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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.