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Finding the Fourth Proportional to 304,128.51, 419,679.31 and 168,151.79

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Solution

The fourth proportional to 304,128.51, 419,679.31 and 168,151.79 is: 232,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,128.51 : 419,679.31 = 168,151.79 : x
  2. Step 2: Convert to fraction form
    304,128.51/419,679.31 = 168,151.79/x
  3. Step 3: Cross multiply
    304,128.51x = 419,679.31 × 168,151.79
  4. Step 4: Simplify right side
    304,128.51x = 70,569,824,683.69
  5. Step 5: Solve for x
    x = 70,569,824,683.69/304,128.51
  6. Step 6: Final answer
    x = 232,039.49

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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.