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Finding the Fourth Proportional to 380,463.90, 570,425.54 and 190,787.44

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Solution

The fourth proportional to 380,463.90, 570,425.54 and 190,787.44 is: 286,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,463.90 : 570,425.54 = 190,787.44 : x
  2. Step 2: Convert to fraction form
    380,463.90/570,425.54 = 190,787.44/x
  3. Step 3: Cross multiply
    380,463.90x = 570,425.54 × 190,787.44
  4. Step 4: Simplify right side
    380,463.90x = 108,830,028,487.22
  5. Step 5: Solve for x
    x = 108,830,028,487.22/380,463.90
  6. Step 6: Final answer
    x = 286,045.61

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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.