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Finding the Fourth Proportional to 304,364.79, 420,012.54 and 168,398.19

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Solution

The fourth proportional to 304,364.79, 420,012.54 and 168,398.19 is: 232,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,364.79 : 420,012.54 = 168,398.19 : x
  2. Step 2: Convert to fraction form
    304,364.79/420,012.54 = 168,398.19/x
  3. Step 3: Cross multiply
    304,364.79x = 420,012.54 × 168,398.19
  4. Step 4: Simplify right side
    304,364.79x = 70,729,351,513.30
  5. Step 5: Solve for x
    x = 70,729,351,513.30/304,364.79
  6. Step 6: Final answer
    x = 232,383.49

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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.