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Finding the Fourth Proportional to 529,815.20, 794,108.40 and 214,064.80

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Solution

The fourth proportional to 529,815.20, 794,108.40 and 214,064.80 is: 320,848.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,815.20 : 794,108.40 = 214,064.80 : x
  2. Step 2: Convert to fraction form
    529,815.20/794,108.40 = 214,064.80/x
  3. Step 3: Cross multiply
    529,815.20x = 794,108.40 × 214,064.80
  4. Step 4: Simplify right side
    529,815.20x = 169,990,655,824.32
  5. Step 5: Solve for x
    x = 169,990,655,824.32/529,815.20
  6. Step 6: Final answer
    x = 320,848.96

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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.