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Finding the Fourth Proportional to 547,482.61, 821,225.82 and 168,400.79

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Solution

The fourth proportional to 547,482.61, 821,225.82 and 168,400.79 is: 252,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,482.61 : 821,225.82 = 168,400.79 : x
  2. Step 2: Convert to fraction form
    547,482.61/821,225.82 = 168,400.79/x
  3. Step 3: Cross multiply
    547,482.61x = 821,225.82 × 168,400.79
  4. Step 4: Simplify right side
    547,482.61x = 138,295,076,461.37
  5. Step 5: Solve for x
    x = 138,295,076,461.37/547,482.61
  6. Step 6: Final answer
    x = 252,601.77

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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.