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Finding the Fourth Proportional to 243,044.80, 364,567.20 and 85,216.30

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Solution

The fourth proportional to 243,044.80, 364,567.20 and 85,216.30 is: 127,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,044.80 : 364,567.20 = 85,216.30 : x
  2. Step 2: Convert to fraction form
    243,044.80/364,567.20 = 85,216.30/x
  3. Step 3: Cross multiply
    243,044.80x = 364,567.20 × 85,216.30
  4. Step 4: Simplify right side
    243,044.80x = 31,067,067,885.36
  5. Step 5: Solve for x
    x = 31,067,067,885.36/243,044.80
  6. Step 6: Final answer
    x = 127,824.45

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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.