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Finding the Fourth Proportional to 355,854.34, 491,030.54 and 212,583.96

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Solution

The fourth proportional to 355,854.34, 491,030.54 and 212,583.96 is: 293,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,854.34 : 491,030.54 = 212,583.96 : x
  2. Step 2: Convert to fraction form
    355,854.34/491,030.54 = 212,583.96/x
  3. Step 3: Cross multiply
    355,854.34x = 491,030.54 × 212,583.96
  4. Step 4: Simplify right side
    355,854.34x = 104,385,216,674.14
  5. Step 5: Solve for x
    x = 104,385,216,674.14/355,854.34
  6. Step 6: Final answer
    x = 293,336.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.