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Finding the Fourth Proportional to 393,550.80, 590,326.20 and 144,200.40

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Solution

The fourth proportional to 393,550.80, 590,326.20 and 144,200.40 is: 216,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,550.80 : 590,326.20 = 144,200.40 : x
  2. Step 2: Convert to fraction form
    393,550.80/590,326.20 = 144,200.40/x
  3. Step 3: Cross multiply
    393,550.80x = 590,326.20 × 144,200.40
  4. Step 4: Simplify right side
    393,550.80x = 85,125,274,170.48
  5. Step 5: Solve for x
    x = 85,125,274,170.48/393,550.80
  6. Step 6: Final answer
    x = 216,300.60

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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.