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Finding the Fourth Proportional to 373,128, 559,692 and 136,341.60

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Solution

The fourth proportional to 373,128, 559,692 and 136,341.60 is: 204,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,128 : 559,692 = 136,341.60 : x
  2. Step 2: Convert to fraction form
    373,128/559,692 = 136,341.60/x
  3. Step 3: Cross multiply
    373,128x = 559,692 × 136,341.60
  4. Step 4: Simplify right side
    373,128x = 76,309,302,787.20
  5. Step 5: Solve for x
    x = 76,309,302,787.20/373,128
  6. Step 6: Final answer
    x = 204,512.40

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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.