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Finding the Fourth Proportional to 398,614.20, 598,026.90 and 173,878.20

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Solution

The fourth proportional to 398,614.20, 598,026.90 and 173,878.20 is: 260,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,614.20 : 598,026.90 = 173,878.20 : x
  2. Step 2: Convert to fraction form
    398,614.20/598,026.90 = 173,878.20/x
  3. Step 3: Cross multiply
    398,614.20x = 598,026.90 × 173,878.20
  4. Step 4: Simplify right side
    398,614.20x = 103,983,840,923.58
  5. Step 5: Solve for x
    x = 103,983,840,923.58/398,614.20
  6. Step 6: Final answer
    x = 260,863.36

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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.