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Finding the Fourth Proportional to 380,666.32, 570,376.56 and 230,451.31

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Solution

The fourth proportional to 380,666.32, 570,376.56 and 230,451.31 is: 345,299.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,666.32 : 570,376.56 = 230,451.31 : x
  2. Step 2: Convert to fraction form
    380,666.32/570,376.56 = 230,451.31/x
  3. Step 3: Cross multiply
    380,666.32x = 570,376.56 × 230,451.31
  4. Step 4: Simplify right side
    380,666.32x = 131,444,025,294.07
  5. Step 5: Solve for x
    x = 131,444,025,294.07/380,666.32
  6. Step 6: Final answer
    x = 345,299.86

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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.