Home / 287,827.20-431,157.60-163,022.40

Finding the Fourth Proportional to 287,827.20, 431,157.60 and 163,022.40

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Solution

The fourth proportional to 287,827.20, 431,157.60 and 163,022.40 is: 244,203.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,827.20 : 431,157.60 = 163,022.40 : x
  2. Step 2: Convert to fraction form
    287,827.20/431,157.60 = 163,022.40/x
  3. Step 3: Cross multiply
    287,827.20x = 431,157.60 × 163,022.40
  4. Step 4: Simplify right side
    287,827.20x = 70,288,346,730.24
  5. Step 5: Solve for x
    x = 70,288,346,730.24/287,827.20
  6. Step 6: Final answer
    x = 244,203.28

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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.