Home / 287,872.40-397,265.64-160,556.18

Finding the Fourth Proportional to 287,872.40, 397,265.64 and 160,556.18

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Solution

The fourth proportional to 287,872.40, 397,265.64 and 160,556.18 is: 221,568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,872.40 : 397,265.64 = 160,556.18 : x
  2. Step 2: Convert to fraction form
    287,872.40/397,265.64 = 160,556.18/x
  3. Step 3: Cross multiply
    287,872.40x = 397,265.64 × 160,556.18
  4. Step 4: Simplify right side
    287,872.40x = 63,783,453,603.66
  5. Step 5: Solve for x
    x = 63,783,453,603.66/287,872.40
  6. Step 6: Final answer
    x = 221,568.49

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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.