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Finding the Fourth Proportional to 347,863.20, 521,017.20 and 340,087.20

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Solution

The fourth proportional to 347,863.20, 521,017.20 and 340,087.20 is: 509,370.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,863.20 : 521,017.20 = 340,087.20 : x
  2. Step 2: Convert to fraction form
    347,863.20/521,017.20 = 340,087.20/x
  3. Step 3: Cross multiply
    347,863.20x = 521,017.20 × 340,087.20
  4. Step 4: Simplify right side
    347,863.20x = 177,191,280,699.84
  5. Step 5: Solve for x
    x = 177,191,280,699.84/347,863.20
  6. Step 6: Final answer
    x = 509,370.58

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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.