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Finding the Fourth Proportional to 509,777.12, 764,758.02 and 210,090.89

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Solution

The fourth proportional to 509,777.12, 764,758.02 and 210,090.89 is: 315,174.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,777.12 : 764,758.02 = 210,090.89 : x
  2. Step 2: Convert to fraction form
    509,777.12/764,758.02 = 210,090.89/x
  3. Step 3: Cross multiply
    509,777.12x = 764,758.02 × 210,090.89
  4. Step 4: Simplify right side
    509,777.12x = 160,668,693,056.44
  5. Step 5: Solve for x
    x = 160,668,693,056.44/509,777.12
  6. Step 6: Final answer
    x = 315,174.39

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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.