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Finding the Fourth Proportional to 398,834.80, 598,252.20 and 162,347.20

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Solution

The fourth proportional to 398,834.80, 598,252.20 and 162,347.20 is: 243,520.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,834.80 : 598,252.20 = 162,347.20 : x
  2. Step 2: Convert to fraction form
    398,834.80/598,252.20 = 162,347.20/x
  3. Step 3: Cross multiply
    398,834.80x = 598,252.20 × 162,347.20
  4. Step 4: Simplify right side
    398,834.80x = 97,124,569,563.84
  5. Step 5: Solve for x
    x = 97,124,569,563.84/398,834.80
  6. Step 6: Final answer
    x = 243,520.80

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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.