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Finding the Fourth Proportional to 386,377.32, 579,602.82 and 120,066.12

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Solution

The fourth proportional to 386,377.32, 579,602.82 and 120,066.12 is: 180,110.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,377.32 : 579,602.82 = 120,066.12 : x
  2. Step 2: Convert to fraction form
    386,377.32/579,602.82 = 120,066.12/x
  3. Step 3: Cross multiply
    386,377.32x = 579,602.82 × 120,066.12
  4. Step 4: Simplify right side
    386,377.32x = 69,590,661,738.46
  5. Step 5: Solve for x
    x = 69,590,661,738.46/386,377.32
  6. Step 6: Final answer
    x = 180,110.63

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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.