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Finding the Fourth Proportional to 398,813.80, 598,220.70 and 162,326.20

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Solution

The fourth proportional to 398,813.80, 598,220.70 and 162,326.20 is: 243,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,813.80 : 598,220.70 = 162,326.20 : x
  2. Step 2: Convert to fraction form
    398,813.80/598,220.70 = 162,326.20/x
  3. Step 3: Cross multiply
    398,813.80x = 598,220.70 × 162,326.20
  4. Step 4: Simplify right side
    398,813.80x = 97,106,892,992.34
  5. Step 5: Solve for x
    x = 97,106,892,992.34/398,813.80
  6. Step 6: Final answer
    x = 243,489.30

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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.