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Finding the Fourth Proportional to 288,187.80, 402,529.80 and 288,187.80

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Solution

The fourth proportional to 288,187.80, 402,529.80 and 288,187.80 is: 402,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,187.80 : 402,529.80 = 288,187.80 : x
  2. Step 2: Convert to fraction form
    288,187.80/402,529.80 = 288,187.80/x
  3. Step 3: Cross multiply
    288,187.80x = 402,529.80 × 288,187.80
  4. Step 4: Simplify right side
    288,187.80x = 116,004,177,496.44
  5. Step 5: Solve for x
    x = 116,004,177,496.44/288,187.80
  6. Step 6: Final answer
    x = 402,529.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.