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Finding the Fourth Proportional to 354,634.60, 531,951.90 and 144,423.40

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Solution

The fourth proportional to 354,634.60, 531,951.90 and 144,423.40 is: 216,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,634.60 : 531,951.90 = 144,423.40 : x
  2. Step 2: Convert to fraction form
    354,634.60/531,951.90 = 144,423.40/x
  3. Step 3: Cross multiply
    354,634.60x = 531,951.90 × 144,423.40
  4. Step 4: Simplify right side
    354,634.60x = 76,826,302,034.46
  5. Step 5: Solve for x
    x = 76,826,302,034.46/354,634.60
  6. Step 6: Final answer
    x = 216,635.10

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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.