Home / 287,743.70-431,032.35-162,938.90

Finding the Fourth Proportional to 287,743.70, 431,032.35 and 162,938.90

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Solution

The fourth proportional to 287,743.70, 431,032.35 and 162,938.90 is: 244,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,743.70 : 431,032.35 = 162,938.90 : x
  2. Step 2: Convert to fraction form
    287,743.70/431,032.35 = 162,938.90/x
  3. Step 3: Cross multiply
    287,743.70x = 431,032.35 × 162,938.90
  4. Step 4: Simplify right side
    287,743.70x = 70,231,936,973.42
  5. Step 5: Solve for x
    x = 70,231,936,973.42/287,743.70
  6. Step 6: Final answer
    x = 244,078.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.