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Finding the Fourth Proportional to 379,880.88, 569,952.36 and 143,291.28

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Solution

The fourth proportional to 379,880.88, 569,952.36 and 143,291.28 is: 214,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,880.88 : 569,952.36 = 143,291.28 : x
  2. Step 2: Convert to fraction form
    379,880.88/569,952.36 = 143,291.28/x
  3. Step 3: Cross multiply
    379,880.88x = 569,952.36 × 143,291.28
  4. Step 4: Simplify right side
    379,880.88x = 81,669,203,203.42
  5. Step 5: Solve for x
    x = 81,669,203,203.42/379,880.88
  6. Step 6: Final answer
    x = 214,986.35

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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.