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Finding the Fourth Proportional to 386,000.70, 579,519.45 and 246,378.30

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Solution

The fourth proportional to 386,000.70, 579,519.45 and 246,378.30 is: 369,898.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,000.70 : 579,519.45 = 246,378.30 : x
  2. Step 2: Convert to fraction form
    386,000.70/579,519.45 = 246,378.30/x
  3. Step 3: Cross multiply
    386,000.70x = 579,519.45 × 246,378.30
  4. Step 4: Simplify right side
    386,000.70x = 142,781,016,907.94
  5. Step 5: Solve for x
    x = 142,781,016,907.94/386,000.70
  6. Step 6: Final answer
    x = 369,898.34

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1.5x scale

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.