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Finding the Fourth Proportional to 386,106.32, 579,240.12 and 119,859.92

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Solution

The fourth proportional to 386,106.32, 579,240.12 and 119,859.92 is: 179,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,106.32 : 579,240.12 = 119,859.92 : x
  2. Step 2: Convert to fraction form
    386,106.32/579,240.12 = 119,859.92/x
  3. Step 3: Cross multiply
    386,106.32x = 579,240.12 × 119,859.92
  4. Step 4: Simplify right side
    386,106.32x = 69,427,674,443.99
  5. Step 5: Solve for x
    x = 69,427,674,443.99/386,106.32
  6. Step 6: Final answer
    x = 179,814.91

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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.