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Finding the Fourth Proportional to 288,450.72, 397,910.88 and 180,817.92

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Solution

The fourth proportional to 288,450.72, 397,910.88 and 180,817.92 is: 249,434.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,450.72 : 397,910.88 = 180,817.92 : x
  2. Step 2: Convert to fraction form
    288,450.72/397,910.88 = 180,817.92/x
  3. Step 3: Cross multiply
    288,450.72x = 397,910.88 × 180,817.92
  4. Step 4: Simplify right side
    288,450.72x = 71,949,417,666.97
  5. Step 5: Solve for x
    x = 71,949,417,666.97/288,450.72
  6. Step 6: Final answer
    x = 249,434.00

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1.5x scale

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.