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Finding the Fourth Proportional to 489,614.12, 734,421.18 and 134,665.64

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Solution

The fourth proportional to 489,614.12, 734,421.18 and 134,665.64 is: 201,998.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,614.12 : 734,421.18 = 134,665.64 : x
  2. Step 2: Convert to fraction form
    489,614.12/734,421.18 = 134,665.64/x
  3. Step 3: Cross multiply
    489,614.12x = 734,421.18 × 134,665.64
  4. Step 4: Simplify right side
    489,614.12x = 98,901,298,234.26
  5. Step 5: Solve for x
    x = 98,901,298,234.26/489,614.12
  6. Step 6: Final answer
    x = 201,998.46

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Similar ratio
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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.