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Finding the Fourth Proportional to 297,023.76, 445,529.16 and 72,385.65

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Solution

The fourth proportional to 297,023.76, 445,529.16 and 72,385.65 is: 108,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,023.76 : 445,529.16 = 72,385.65 : x
  2. Step 2: Convert to fraction form
    297,023.76/445,529.16 = 72,385.65/x
  3. Step 3: Cross multiply
    297,023.76x = 445,529.16 × 72,385.65
  4. Step 4: Simplify right side
    297,023.76x = 32,249,917,840.55
  5. Step 5: Solve for x
    x = 32,249,917,840.55/297,023.76
  6. Step 6: Final answer
    x = 108,576.90

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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.