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Finding the Fourth Proportional to 547,076.40, 820,537.80 and 173,137.20

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Solution

The fourth proportional to 547,076.40, 820,537.80 and 173,137.20 is: 259,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,076.40 : 820,537.80 = 173,137.20 : x
  2. Step 2: Convert to fraction form
    547,076.40/820,537.80 = 173,137.20/x
  3. Step 3: Cross multiply
    547,076.40x = 820,537.80 × 173,137.20
  4. Step 4: Simplify right side
    547,076.40x = 142,065,617,186.16
  5. Step 5: Solve for x
    x = 142,065,617,186.16/547,076.40
  6. Step 6: Final answer
    x = 259,681.49

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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.