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Finding the Fourth Proportional to 243,124.58, 364,723.23 and 85,325.30

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Solution

The fourth proportional to 243,124.58, 364,723.23 and 85,325.30 is: 128,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,124.58 : 364,723.23 = 85,325.30 : x
  2. Step 2: Convert to fraction form
    243,124.58/364,723.23 = 85,325.30/x
  3. Step 3: Cross multiply
    243,124.58x = 364,723.23 × 85,325.30
  4. Step 4: Simplify right side
    243,124.58x = 31,120,119,016.72
  5. Step 5: Solve for x
    x = 31,120,119,016.72/243,124.58
  6. Step 6: Final answer
    x = 128,000.71

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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.