Home / 287,833.20-431,166.60-163,028.40

Finding the Fourth Proportional to 287,833.20, 431,166.60 and 163,028.40

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Solution

The fourth proportional to 287,833.20, 431,166.60 and 163,028.40 is: 244,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,833.20 : 431,166.60 = 163,028.40 : x
  2. Step 2: Convert to fraction form
    287,833.20/431,166.60 = 163,028.40/x
  3. Step 3: Cross multiply
    287,833.20x = 431,166.60 × 163,028.40
  4. Step 4: Simplify right side
    287,833.20x = 70,292,400,931.44
  5. Step 5: Solve for x
    x = 70,292,400,931.44/287,833.20
  6. Step 6: Final answer
    x = 244,212.28

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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.