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Finding the Fourth Proportional to 386,312.90, 579,469.35 and 364,540.10

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Solution

The fourth proportional to 386,312.90, 579,469.35 and 364,540.10 is: 546,810.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,312.90 : 579,469.35 = 364,540.10 : x
  2. Step 2: Convert to fraction form
    386,312.90/579,469.35 = 364,540.10/x
  3. Step 3: Cross multiply
    386,312.90x = 579,469.35 × 364,540.10
  4. Step 4: Simplify right side
    386,312.90x = 211,239,814,795.94
  5. Step 5: Solve for x
    x = 211,239,814,795.94/386,312.90
  6. Step 6: Final answer
    x = 546,810.15

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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.