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Finding the Fourth Proportional to 386,275.08, 579,387.22 and 133,496.76

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Solution

The fourth proportional to 386,275.08, 579,387.22 and 133,496.76 is: 200,236.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,275.08 : 579,387.22 = 133,496.76 : x
  2. Step 2: Convert to fraction form
    386,275.08/579,387.22 = 133,496.76/x
  3. Step 3: Cross multiply
    386,275.08x = 579,387.22 × 133,496.76
  4. Step 4: Simplify right side
    386,275.08x = 77,346,316,655.41
  5. Step 5: Solve for x
    x = 77,346,316,655.41/386,275.08
  6. Step 6: Final answer
    x = 200,236.36

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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.