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Finding the Fourth Proportional to 308,165.49, 461,904.76 and 128,150.11

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Solution

The fourth proportional to 308,165.49, 461,904.76 and 128,150.11 is: 192,082.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,165.49 : 461,904.76 = 128,150.11 : x
  2. Step 2: Convert to fraction form
    308,165.49/461,904.76 = 128,150.11/x
  3. Step 3: Cross multiply
    308,165.49x = 461,904.76 × 128,150.11
  4. Step 4: Simplify right side
    308,165.49x = 59,193,146,541.09
  5. Step 5: Solve for x
    x = 59,193,146,541.09/308,165.49
  6. Step 6: Final answer
    x = 192,082.33

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1.5x scale

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.