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Finding the Fourth Proportional to 477,940, 659,480 and 273,953.36

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Solution

The fourth proportional to 477,940, 659,480 and 273,953.36 is: 378,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,940 : 659,480 = 273,953.36 : x
  2. Step 2: Convert to fraction form
    477,940/659,480 = 273,953.36/x
  3. Step 3: Cross multiply
    477,940x = 659,480 × 273,953.36
  4. Step 4: Simplify right side
    477,940x = 180,666,761,852.80
  5. Step 5: Solve for x
    x = 180,666,761,852.80/477,940
  6. Step 6: Final answer
    x = 378,011.39

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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.