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Finding the Fourth Proportional to 354,329.20, 531,493.80 and 349,080.40

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Solution

The fourth proportional to 354,329.20, 531,493.80 and 349,080.40 is: 523,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,329.20 : 531,493.80 = 349,080.40 : x
  2. Step 2: Convert to fraction form
    354,329.20/531,493.80 = 349,080.40/x
  3. Step 3: Cross multiply
    354,329.20x = 531,493.80 × 349,080.40
  4. Step 4: Simplify right side
    354,329.20x = 185,534,068,301.52
  5. Step 5: Solve for x
    x = 185,534,068,301.52/354,329.20
  6. Step 6: Final answer
    x = 523,620.60

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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.