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Finding the Fourth Proportional to 307,613.59, 424,506.18 and 171,639.34

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Solution

The fourth proportional to 307,613.59, 424,506.18 and 171,639.34 is: 236,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,613.59 : 424,506.18 = 171,639.34 : x
  2. Step 2: Convert to fraction form
    307,613.59/424,506.18 = 171,639.34/x
  3. Step 3: Cross multiply
    307,613.59x = 424,506.18 × 171,639.34
  4. Step 4: Simplify right side
    307,613.59x = 72,861,960,561.12
  5. Step 5: Solve for x
    x = 72,861,960,561.12/307,613.59
  6. Step 6: Final answer
    x = 236,861.97

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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.