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Finding the Fourth Proportional to 307,639.73, 424,542.90 and 169,818.73

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Solution

The fourth proportional to 307,639.73, 424,542.90 and 169,818.73 is: 234,349.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,639.73 : 424,542.90 = 169,818.73 : x
  2. Step 2: Convert to fraction form
    307,639.73/424,542.90 = 169,818.73/x
  3. Step 3: Cross multiply
    307,639.73x = 424,542.90 × 169,818.73
  4. Step 4: Simplify right side
    307,639.73x = 72,095,336,241.19
  5. Step 5: Solve for x
    x = 72,095,336,241.19/307,639.73
  6. Step 6: Final answer
    x = 234,349.89

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1.5x scale

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.