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Finding the Fourth Proportional to 354,639.60, 531,527.40 and 154,537.20

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Solution

The fourth proportional to 354,639.60, 531,527.40 and 154,537.20 is: 231,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,639.60 : 531,527.40 = 154,537.20 : x
  2. Step 2: Convert to fraction form
    354,639.60/531,527.40 = 154,537.20/x
  3. Step 3: Cross multiply
    354,639.60x = 531,527.40 × 154,537.20
  4. Step 4: Simplify right side
    354,639.60x = 82,140,756,119.28
  5. Step 5: Solve for x
    x = 82,140,756,119.28/354,639.60
  6. Step 6: Final answer
    x = 231,617.55

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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.