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Finding the Fourth Proportional to 304,970.78, 420,860.67 and 169,006.97

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Solution

The fourth proportional to 304,970.78, 420,860.67 and 169,006.97 is: 233,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,970.78 : 420,860.67 = 169,006.97 : x
  2. Step 2: Convert to fraction form
    304,970.78/420,860.67 = 169,006.97/x
  3. Step 3: Cross multiply
    304,970.78x = 420,860.67 × 169,006.97
  4. Step 4: Simplify right side
    304,970.78x = 71,128,386,628.87
  5. Step 5: Solve for x
    x = 71,128,386,628.87/304,970.78
  6. Step 6: Final answer
    x = 233,230.17

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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.