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Finding the Fourth Proportional to 443,529.20, 665,293.80 and 218,924.30

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Solution

The fourth proportional to 443,529.20, 665,293.80 and 218,924.30 is: 328,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,529.20 : 665,293.80 = 218,924.30 : x
  2. Step 2: Convert to fraction form
    443,529.20/665,293.80 = 218,924.30/x
  3. Step 3: Cross multiply
    443,529.20x = 665,293.80 × 218,924.30
  4. Step 4: Simplify right side
    443,529.20x = 145,648,979,459.34
  5. Step 5: Solve for x
    x = 145,648,979,459.34/443,529.20
  6. Step 6: Final answer
    x = 328,386.45

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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.