Home / 287,860.20-431,207.10-163,055.40

Finding the Fourth Proportional to 287,860.20, 431,207.10 and 163,055.40

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Solution

The fourth proportional to 287,860.20, 431,207.10 and 163,055.40 is: 244,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,860.20 : 431,207.10 = 163,055.40 : x
  2. Step 2: Convert to fraction form
    287,860.20/431,207.10 = 163,055.40/x
  3. Step 3: Cross multiply
    287,860.20x = 431,207.10 × 163,055.40
  4. Step 4: Simplify right side
    287,860.20x = 70,310,646,173.34
  5. Step 5: Solve for x
    x = 70,310,646,173.34/287,860.20
  6. Step 6: Final answer
    x = 244,252.75

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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.