Home / 220,806,987.21-304,715,726.42-121,691,359.89

Finding the Fourth Proportional to 220,806,987.21, 304,715,726.42 and 121,691,359.89

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Solution

The fourth proportional to 220,806,987.21, 304,715,726.42 and 121,691,359.89 is: 167,935,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,806,987.21 : 304,715,726.42 = 121,691,359.89 : x
  2. Step 2: Convert to fraction form
    220,806,987.21/304,715,726.42 = 121,691,359.89/x
  3. Step 3: Cross multiply
    220,806,987.21x = 304,715,726.42 × 121,691,359.89
  4. Step 4: Simplify right side
    220,806,987.21x = 37,081,271,127,310,544
  5. Step 5: Solve for x
    x = 37,081,271,127,310,544/220,806,987.21
  6. Step 6: Final answer
    x = 167,935,225.22

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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.