Home / 305,097.04-421,012.68-169,129.68

Finding the Fourth Proportional to 305,097.04, 421,012.68 and 169,129.68

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Solution

The fourth proportional to 305,097.04, 421,012.68 and 169,129.68 is: 233,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,097.04 : 421,012.68 = 169,129.68 : x
  2. Step 2: Convert to fraction form
    305,097.04/421,012.68 = 169,129.68/x
  3. Step 3: Cross multiply
    305,097.04x = 421,012.68 × 169,129.68
  4. Step 4: Simplify right side
    305,097.04x = 71,205,739,844.34
  5. Step 5: Solve for x
    x = 71,205,739,844.34/305,097.04
  6. Step 6: Final answer
    x = 233,387.19

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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.