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Finding the Fourth Proportional to 386,266,145.20, 579,399,217.80 and 386,266,145.20

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Solution

The fourth proportional to 386,266,145.20, 579,399,217.80 and 386,266,145.20 is: 579,399,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,266,145.20 : 579,399,217.80 = 386,266,145.20 : x
  2. Step 2: Convert to fraction form
    386,266,145.20/579,399,217.80 = 386,266,145.20/x
  3. Step 3: Cross multiply
    386,266,145.20x = 579,399,217.80 × 386,266,145.20
  4. Step 4: Simplify right side
    386,266,145.20x = 223,802,302,391,501,184
  5. Step 5: Solve for x
    x = 223,802,302,391,501,184/386,266,145.20
  6. Step 6: Final answer
    x = 579,399,217.80

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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.