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Finding the Fourth Proportional to 198,472.21, 297,754.45 and 65,353.63

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Solution

The fourth proportional to 198,472.21, 297,754.45 and 65,353.63 is: 98,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,472.21 : 297,754.45 = 65,353.63 : x
  2. Step 2: Convert to fraction form
    198,472.21/297,754.45 = 65,353.63/x
  3. Step 3: Cross multiply
    198,472.21x = 297,754.45 × 65,353.63
  4. Step 4: Simplify right side
    198,472.21x = 19,459,334,156.15
  5. Step 5: Solve for x
    x = 19,459,334,156.15/198,472.21
  6. Step 6: Final answer
    x = 98,045.64

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1.5x scale

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.