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Finding the Fourth Proportional to 347,277.20, 520,915.80 and 110,643.80

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Solution

The fourth proportional to 347,277.20, 520,915.80 and 110,643.80 is: 165,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,277.20 : 520,915.80 = 110,643.80 : x
  2. Step 2: Convert to fraction form
    347,277.20/520,915.80 = 110,643.80/x
  3. Step 3: Cross multiply
    347,277.20x = 520,915.80 × 110,643.80
  4. Step 4: Simplify right side
    347,277.20x = 57,636,103,592.04
  5. Step 5: Solve for x
    x = 57,636,103,592.04/347,277.20
  6. Step 6: Final answer
    x = 165,965.70

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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.