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Finding the Fourth Proportional to 287,872.72, 397,265.01 and 160,556.51

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Solution

The fourth proportional to 287,872.72, 397,265.01 and 160,556.51 is: 221,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,872.72 : 397,265.01 = 160,556.51 : x
  2. Step 2: Convert to fraction form
    287,872.72/397,265.01 = 160,556.51/x
  3. Step 3: Cross multiply
    287,872.72x = 397,265.01 × 160,556.51
  4. Step 4: Simplify right side
    287,872.72x = 63,783,483,941.79
  5. Step 5: Solve for x
    x = 63,783,483,941.79/287,872.72
  6. Step 6: Final answer
    x = 221,568.35

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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.