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Finding the Fourth Proportional to 199,814.40, 299,678.40 and 87,494.40

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Solution

The fourth proportional to 199,814.40, 299,678.40 and 87,494.40 is: 131,222.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,814.40 : 299,678.40 = 87,494.40 : x
  2. Step 2: Convert to fraction form
    199,814.40/299,678.40 = 87,494.40/x
  3. Step 3: Cross multiply
    199,814.40x = 299,678.40 × 87,494.40
  4. Step 4: Simplify right side
    199,814.40x = 26,220,181,800.96
  5. Step 5: Solve for x
    x = 26,220,181,800.96/199,814.40
  6. Step 6: Final answer
    x = 131,222.68

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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.