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Finding the Fourth Proportional to 509,333.12, 764,331.36 and 193,792.64

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Solution

The fourth proportional to 509,333.12, 764,331.36 and 193,792.64 is: 290,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,333.12 : 764,331.36 = 193,792.64 : x
  2. Step 2: Convert to fraction form
    509,333.12/764,331.36 = 193,792.64/x
  3. Step 3: Cross multiply
    509,333.12x = 764,331.36 × 193,792.64
  4. Step 4: Simplify right side
    509,333.12x = 148,121,792,089.19
  5. Step 5: Solve for x
    x = 148,121,792,089.19/509,333.12
  6. Step 6: Final answer
    x = 290,815.16

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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.