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Finding the Fourth Proportional to 547,543.40, 821,315.10 and 192,554.60

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Solution

The fourth proportional to 547,543.40, 821,315.10 and 192,554.60 is: 288,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,543.40 : 821,315.10 = 192,554.60 : x
  2. Step 2: Convert to fraction form
    547,543.40/821,315.10 = 192,554.60/x
  3. Step 3: Cross multiply
    547,543.40x = 821,315.10 × 192,554.60
  4. Step 4: Simplify right side
    547,543.40x = 158,148,000,554.46
  5. Step 5: Solve for x
    x = 158,148,000,554.46/547,543.40
  6. Step 6: Final answer
    x = 288,831.90

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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.