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Finding the Fourth Proportional to 291,566.72, 435,752.60 and 212,846.72

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Solution

The fourth proportional to 291,566.72, 435,752.60 and 212,846.72 is: 318,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,566.72 : 435,752.60 = 212,846.72 : x
  2. Step 2: Convert to fraction form
    291,566.72/435,752.60 = 212,846.72/x
  3. Step 3: Cross multiply
    291,566.72x = 435,752.60 × 212,846.72
  4. Step 4: Simplify right side
    291,566.72x = 92,748,508,398.48
  5. Step 5: Solve for x
    x = 92,748,508,398.48/291,566.72
  6. Step 6: Final answer
    x = 318,103.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.