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Finding the Fourth Proportional to 292,815, 404,084.70 and 158,679

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Solution

The fourth proportional to 292,815, 404,084.70 and 158,679 is: 218,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,815 : 404,084.70 = 158,679 : x
  2. Step 2: Convert to fraction form
    292,815/404,084.70 = 158,679/x
  3. Step 3: Cross multiply
    292,815x = 404,084.70 × 158,679
  4. Step 4: Simplify right side
    292,815x = 64,119,756,111.30
  5. Step 5: Solve for x
    x = 64,119,756,111.30/292,815
  6. Step 6: Final answer
    x = 218,977.02

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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.