Home / 547,738.60-821,607.90-192,807.40

Finding the Fourth Proportional to 547,738.60, 821,607.90 and 192,807.40

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Solution

The fourth proportional to 547,738.60, 821,607.90 and 192,807.40 is: 289,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,738.60 : 821,607.90 = 192,807.40 : x
  2. Step 2: Convert to fraction form
    547,738.60/821,607.90 = 192,807.40/x
  3. Step 3: Cross multiply
    547,738.60x = 821,607.90 × 192,807.40
  4. Step 4: Simplify right side
    547,738.60x = 158,412,083,018.46
  5. Step 5: Solve for x
    x = 158,412,083,018.46/547,738.60
  6. Step 6: Final answer
    x = 289,211.10

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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.