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Finding the Fourth Proportional to 297,315.32, 445,969.10 and 72,677.72

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Solution

The fourth proportional to 297,315.32, 445,969.10 and 72,677.72 is: 109,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,315.32 : 445,969.10 = 72,677.72 : x
  2. Step 2: Convert to fraction form
    297,315.32/445,969.10 = 72,677.72/x
  3. Step 3: Cross multiply
    297,315.32x = 445,969.10 × 72,677.72
  4. Step 4: Simplify right side
    297,315.32x = 32,412,018,129.99
  5. Step 5: Solve for x
    x = 32,412,018,129.99/297,315.32
  6. Step 6: Final answer
    x = 109,015.64

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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.