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Finding the Fourth Proportional to 484,866.45, 669,203.91 and 281,047.77

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Solution

The fourth proportional to 484,866.45, 669,203.91 and 281,047.77 is: 387,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,866.45 : 669,203.91 = 281,047.77 : x
  2. Step 2: Convert to fraction form
    484,866.45/669,203.91 = 281,047.77/x
  3. Step 3: Cross multiply
    484,866.45x = 669,203.91 × 281,047.77
  4. Step 4: Simplify right side
    484,866.45x = 188,078,266,580.78
  5. Step 5: Solve for x
    x = 188,078,266,580.78/484,866.45
  6. Step 6: Final answer
    x = 387,897.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.