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Finding the Fourth Proportional to 347,738.40, 521,607.60 and 240,429.60

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Solution

The fourth proportional to 347,738.40, 521,607.60 and 240,429.60 is: 360,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,738.40 : 521,607.60 = 240,429.60 : x
  2. Step 2: Convert to fraction form
    347,738.40/521,607.60 = 240,429.60/x
  3. Step 3: Cross multiply
    347,738.40x = 521,607.60 × 240,429.60
  4. Step 4: Simplify right side
    347,738.40x = 125,409,906,624.96
  5. Step 5: Solve for x
    x = 125,409,906,624.96/347,738.40
  6. Step 6: Final answer
    x = 360,644.40

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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.