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Finding the Fourth Proportional to 386,080.77, 579,095.74 and 133,364.89

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Solution

The fourth proportional to 386,080.77, 579,095.74 and 133,364.89 is: 200,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,080.77 : 579,095.74 = 133,364.89 : x
  2. Step 2: Convert to fraction form
    386,080.77/579,095.74 = 133,364.89/x
  3. Step 3: Cross multiply
    386,080.77x = 579,095.74 × 133,364.89
  4. Step 4: Simplify right side
    386,080.77x = 77,231,037,883.42
  5. Step 5: Solve for x
    x = 77,231,037,883.42/386,080.77
  6. Step 6: Final answer
    x = 200,038.55

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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.