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Finding the Fourth Proportional to 382,560.80, 528,035.28 and 269,434.40

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Solution

The fourth proportional to 382,560.80, 528,035.28 and 269,434.40 is: 371,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,560.80 : 528,035.28 = 269,434.40 : x
  2. Step 2: Convert to fraction form
    382,560.80/528,035.28 = 269,434.40/x
  3. Step 3: Cross multiply
    382,560.80x = 528,035.28 × 269,434.40
  4. Step 4: Simplify right side
    382,560.80x = 142,270,868,845.63
  5. Step 5: Solve for x
    x = 142,270,868,845.63/382,560.80
  6. Step 6: Final answer
    x = 371,890.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.