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Finding the Fourth Proportional to 323,953.35, 485,941.43 and 87,301.72

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Solution

The fourth proportional to 323,953.35, 485,941.43 and 87,301.72 is: 130,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,953.35 : 485,941.43 = 87,301.72 : x
  2. Step 2: Convert to fraction form
    323,953.35/485,941.43 = 87,301.72/x
  3. Step 3: Cross multiply
    323,953.35x = 485,941.43 × 87,301.72
  4. Step 4: Simplify right side
    323,953.35x = 42,423,522,658.26
  5. Step 5: Solve for x
    x = 42,423,522,658.26/323,953.35
  6. Step 6: Final answer
    x = 130,955.65

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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.