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Finding the Fourth Proportional to 509,636.66, 764,459.59 and 154,650.67

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Solution

The fourth proportional to 509,636.66, 764,459.59 and 154,650.67 is: 231,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,636.66 : 764,459.59 = 154,650.67 : x
  2. Step 2: Convert to fraction form
    509,636.66/764,459.59 = 154,650.67/x
  3. Step 3: Cross multiply
    509,636.66x = 764,459.59 × 154,650.67
  4. Step 4: Simplify right side
    509,636.66x = 118,224,185,483.65
  5. Step 5: Solve for x
    x = 118,224,185,483.65/509,636.66
  6. Step 6: Final answer
    x = 231,977.40

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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.