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Finding the Fourth Proportional to 235,999.40, 353,480.70 and 142,341.80

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Solution

The fourth proportional to 235,999.40, 353,480.70 and 142,341.80 is: 213,200.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,999.40 : 353,480.70 = 142,341.80 : x
  2. Step 2: Convert to fraction form
    235,999.40/353,480.70 = 142,341.80/x
  3. Step 3: Cross multiply
    235,999.40x = 353,480.70 × 142,341.80
  4. Step 4: Simplify right side
    235,999.40x = 50,315,079,103.26
  5. Step 5: Solve for x
    x = 50,315,079,103.26/235,999.40
  6. Step 6: Final answer
    x = 213,200.03

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1.5x scale

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.