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Finding the Fourth Proportional to 386,000.10, 579,000.15 and 364,348.80

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Solution

The fourth proportional to 386,000.10, 579,000.15 and 364,348.80 is: 546,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,000.10 : 579,000.15 = 364,348.80 : x
  2. Step 2: Convert to fraction form
    386,000.10/579,000.15 = 364,348.80/x
  3. Step 3: Cross multiply
    386,000.10x = 579,000.15 × 364,348.80
  4. Step 4: Simplify right side
    386,000.10x = 210,958,009,852.32
  5. Step 5: Solve for x
    x = 210,958,009,852.32/386,000.10
  6. Step 6: Final answer
    x = 546,523.20

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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.