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Finding the Fourth Proportional to 304,678.45, 420,456.00 and 168,712.39

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Solution

The fourth proportional to 304,678.45, 420,456.00 and 168,712.39 is: 232,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,678.45 : 420,456.00 = 168,712.39 : x
  2. Step 2: Convert to fraction form
    304,678.45/420,456.00 = 168,712.39/x
  3. Step 3: Cross multiply
    304,678.45x = 420,456.00 × 168,712.39
  4. Step 4: Simplify right side
    304,678.45x = 70,936,136,859.07
  5. Step 5: Solve for x
    x = 70,936,136,859.07/304,678.45
  6. Step 6: Final answer
    x = 232,822.95

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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.