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Finding the Fourth Proportional to 356,346.79, 534,144.71 and 131,563.28

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Solution

The fourth proportional to 356,346.79, 534,144.71 and 131,563.28 is: 197,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,346.79 : 534,144.71 = 131,563.28 : x
  2. Step 2: Convert to fraction form
    356,346.79/534,144.71 = 131,563.28/x
  3. Step 3: Cross multiply
    356,346.79x = 534,144.71 × 131,563.28
  4. Step 4: Simplify right side
    356,346.79x = 70,273,831,706.52
  5. Step 5: Solve for x
    x = 70,273,831,706.52/356,346.79
  6. Step 6: Final answer
    x = 197,206.30

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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.