Home / 386,495.60-579,743.40-197,538.80

Finding the Fourth Proportional to 386,495.60, 579,743.40 and 197,538.80

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Solution

The fourth proportional to 386,495.60, 579,743.40 and 197,538.80 is: 296,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,495.60 : 579,743.40 = 197,538.80 : x
  2. Step 2: Convert to fraction form
    386,495.60/579,743.40 = 197,538.80/x
  3. Step 3: Cross multiply
    386,495.60x = 579,743.40 × 197,538.80
  4. Step 4: Simplify right side
    386,495.60x = 114,521,815,543.92
  5. Step 5: Solve for x
    x = 114,521,815,543.92/386,495.60
  6. Step 6: Final answer
    x = 296,308.20

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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.