Home / 421,290.06-631,934.97-168,684.30

Finding the Fourth Proportional to 421,290.06, 631,934.97 and 168,684.30

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Solution

The fourth proportional to 421,290.06, 631,934.97 and 168,684.30 is: 253,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,290.06 : 631,934.97 = 168,684.30 : x
  2. Step 2: Convert to fraction form
    421,290.06/631,934.97 = 168,684.30/x
  3. Step 3: Cross multiply
    421,290.06x = 631,934.97 × 168,684.30
  4. Step 4: Simplify right side
    421,290.06x = 106,597,508,059.97
  5. Step 5: Solve for x
    x = 106,597,508,059.97/421,290.06
  6. Step 6: Final answer
    x = 253,026.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.