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Finding the Fourth Proportional to 509,343.39, 764,014.28 and 135,366.39

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Solution

The fourth proportional to 509,343.39, 764,014.28 and 135,366.39 is: 203,049.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,343.39 : 764,014.28 = 135,366.39 : x
  2. Step 2: Convert to fraction form
    509,343.39/764,014.28 = 135,366.39/x
  3. Step 3: Cross multiply
    509,343.39x = 764,014.28 × 135,366.39
  4. Step 4: Simplify right side
    509,343.39x = 103,421,854,315.22
  5. Step 5: Solve for x
    x = 103,421,854,315.22/509,343.39
  6. Step 6: Final answer
    x = 203,049.37

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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.