Home / 201,985.20-302,783.40-156,981.60

Finding the Fourth Proportional to 201,985.20, 302,783.40 and 156,981.60

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Solution

The fourth proportional to 201,985.20, 302,783.40 and 156,981.60 is: 235,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,985.20 : 302,783.40 = 156,981.60 : x
  2. Step 2: Convert to fraction form
    201,985.20/302,783.40 = 156,981.60/x
  3. Step 3: Cross multiply
    201,985.20x = 302,783.40 × 156,981.60
  4. Step 4: Simplify right side
    201,985.20x = 47,531,422,585.44
  5. Step 5: Solve for x
    x = 47,531,422,585.44/201,985.20
  6. Step 6: Final answer
    x = 235,321.31

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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.