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Finding the Fourth Proportional to 543,005.60, 815,026.80 and 277,066.40

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Solution

The fourth proportional to 543,005.60, 815,026.80 and 277,066.40 is: 415,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,005.60 : 815,026.80 = 277,066.40 : x
  2. Step 2: Convert to fraction form
    543,005.60/815,026.80 = 277,066.40/x
  3. Step 3: Cross multiply
    543,005.60x = 815,026.80 × 277,066.40
  4. Step 4: Simplify right side
    543,005.60x = 225,816,541,379.52
  5. Step 5: Solve for x
    x = 225,816,541,379.52/543,005.60
  6. Step 6: Final answer
    x = 415,864.11

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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.