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Finding the Fourth Proportional to 538,415.10, 743,011.30 and 296,697.61

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Solution

The fourth proportional to 538,415.10, 743,011.30 and 296,697.61 is: 409,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,415.10 : 743,011.30 = 296,697.61 : x
  2. Step 2: Convert to fraction form
    538,415.10/743,011.30 = 296,697.61/x
  3. Step 3: Cross multiply
    538,415.10x = 743,011.30 × 296,697.61
  4. Step 4: Simplify right side
    538,415.10x = 220,449,676,957.37
  5. Step 5: Solve for x
    x = 220,449,676,957.37/538,415.10
  6. Step 6: Final answer
    x = 409,441.85

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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.