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Finding the Fourth Proportional to 377,375.30, 521,525.10 and 309,284.88

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Solution

The fourth proportional to 377,375.30, 521,525.10 and 309,284.88 is: 427,425.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,375.30 : 521,525.10 = 309,284.88 : x
  2. Step 2: Convert to fraction form
    377,375.30/521,525.10 = 309,284.88/x
  3. Step 3: Cross multiply
    377,375.30x = 521,525.10 × 309,284.88
  4. Step 4: Simplify right side
    377,375.30x = 161,299,827,970.49
  5. Step 5: Solve for x
    x = 161,299,827,970.49/377,375.30
  6. Step 6: Final answer
    x = 427,425.50

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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.