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Finding the Fourth Proportional to 297,031.59, 445,543.34 and 72,393.75

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Solution

The fourth proportional to 297,031.59, 445,543.34 and 72,393.75 is: 108,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,031.59 : 445,543.34 = 72,393.75 : x
  2. Step 2: Convert to fraction form
    297,031.59/445,543.34 = 72,393.75/x
  3. Step 3: Cross multiply
    297,031.59x = 445,543.34 × 72,393.75
  4. Step 4: Simplify right side
    297,031.59x = 32,254,552,808.16
  5. Step 5: Solve for x
    x = 32,254,552,808.16/297,031.59
  6. Step 6: Final answer
    x = 108,589.64

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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.