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Finding the Fourth Proportional to 275,603.20, 413,404.80 and 271,916.80

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Solution

The fourth proportional to 275,603.20, 413,404.80 and 271,916.80 is: 407,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,603.20 : 413,404.80 = 271,916.80 : x
  2. Step 2: Convert to fraction form
    275,603.20/413,404.80 = 271,916.80/x
  3. Step 3: Cross multiply
    275,603.20x = 413,404.80 × 271,916.80
  4. Step 4: Simplify right side
    275,603.20x = 112,411,710,320.64
  5. Step 5: Solve for x
    x = 112,411,710,320.64/275,603.20
  6. Step 6: Final answer
    x = 407,875.20

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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.