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Finding the Fourth Proportional to 287,889.80, 397,472.82 and 180,606.92

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Solution

The fourth proportional to 287,889.80, 397,472.82 and 180,606.92 is: 249,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,889.80 : 397,472.82 = 180,606.92 : x
  2. Step 2: Convert to fraction form
    287,889.80/397,472.82 = 180,606.92/x
  3. Step 3: Cross multiply
    287,889.80x = 397,472.82 × 180,606.92
  4. Step 4: Simplify right side
    287,889.80x = 71,786,341,803.91
  5. Step 5: Solve for x
    x = 71,786,341,803.91/287,889.80
  6. Step 6: Final answer
    x = 249,353.54

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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.