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Finding the Fourth Proportional to 341,639.40, 512,459.10 and 217,530.60

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Solution

The fourth proportional to 341,639.40, 512,459.10 and 217,530.60 is: 326,295.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,639.40 : 512,459.10 = 217,530.60 : x
  2. Step 2: Convert to fraction form
    341,639.40/512,459.10 = 217,530.60/x
  3. Step 3: Cross multiply
    341,639.40x = 512,459.10 × 217,530.60
  4. Step 4: Simplify right side
    341,639.40x = 111,475,535,498.46
  5. Step 5: Solve for x
    x = 111,475,535,498.46/341,639.40
  6. Step 6: Final answer
    x = 326,295.90

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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.