Home / 386,221.76-532,984.80-225,172.16

Finding the Fourth Proportional to 386,221.76, 532,984.80 and 225,172.16

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Solution

The fourth proportional to 386,221.76, 532,984.80 and 225,172.16 is: 310,736.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,221.76 : 532,984.80 = 225,172.16 : x
  2. Step 2: Convert to fraction form
    386,221.76/532,984.80 = 225,172.16/x
  3. Step 3: Cross multiply
    386,221.76x = 532,984.80 × 225,172.16
  4. Step 4: Simplify right side
    386,221.76x = 120,013,338,663.17
  5. Step 5: Solve for x
    x = 120,013,338,663.17/386,221.76
  6. Step 6: Final answer
    x = 310,736.86

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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.