Home / 443,531.20-665,296.80-218,926.30

Finding the Fourth Proportional to 443,531.20, 665,296.80 and 218,926.30

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Solution

The fourth proportional to 443,531.20, 665,296.80 and 218,926.30 is: 328,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,531.20 : 665,296.80 = 218,926.30 : x
  2. Step 2: Convert to fraction form
    443,531.20/665,296.80 = 218,926.30/x
  3. Step 3: Cross multiply
    443,531.20x = 665,296.80 × 218,926.30
  4. Step 4: Simplify right side
    443,531.20x = 145,650,966,825.84
  5. Step 5: Solve for x
    x = 145,650,966,825.84/443,531.20
  6. Step 6: Final answer
    x = 328,389.45

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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.