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Finding the Fourth Proportional to 377,371.30, 521,519.58 and 309,280.88

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Solution

The fourth proportional to 377,371.30, 521,519.58 and 309,280.88 is: 427,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,371.30 : 521,519.58 = 309,280.88 : x
  2. Step 2: Convert to fraction form
    377,371.30/521,519.58 = 309,280.88/x
  3. Step 3: Cross multiply
    377,371.30x = 521,519.58 × 309,280.88
  4. Step 4: Simplify right side
    377,371.30x = 161,296,034,639.63
  5. Step 5: Solve for x
    x = 161,296,034,639.63/377,371.30
  6. Step 6: Final answer
    x = 427,419.98

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1.5x scale

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.