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Finding the Fourth Proportional to 509,639.04, 764,460.36 and 154,656

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Solution

The fourth proportional to 509,639.04, 764,460.36 and 154,656 is: 231,984.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,639.04 : 764,460.36 = 154,656 : x
  2. Step 2: Convert to fraction form
    509,639.04/764,460.36 = 154,656/x
  3. Step 3: Cross multiply
    509,639.04x = 764,460.36 × 154,656
  4. Step 4: Simplify right side
    509,639.04x = 118,228,381,436.16
  5. Step 5: Solve for x
    x = 118,228,381,436.16/509,639.04
  6. Step 6: Final answer
    x = 231,984.55

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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.