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Finding the Fourth Proportional to 228,920.80, 343,381.20 and 154,271.20

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Solution

The fourth proportional to 228,920.80, 343,381.20 and 154,271.20 is: 231,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,920.80 : 343,381.20 = 154,271.20 : x
  2. Step 2: Convert to fraction form
    228,920.80/343,381.20 = 154,271.20/x
  3. Step 3: Cross multiply
    228,920.80x = 343,381.20 × 154,271.20
  4. Step 4: Simplify right side
    228,920.80x = 52,973,829,781.44
  5. Step 5: Solve for x
    x = 52,973,829,781.44/228,920.80
  6. Step 6: Final answer
    x = 231,406.80

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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.