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Finding the Fourth Proportional to 356,071.20, 534,106.80 and 343,629.60

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Solution

The fourth proportional to 356,071.20, 534,106.80 and 343,629.60 is: 515,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,071.20 : 534,106.80 = 343,629.60 : x
  2. Step 2: Convert to fraction form
    356,071.20/534,106.80 = 343,629.60/x
  3. Step 3: Cross multiply
    356,071.20x = 534,106.80 × 343,629.60
  4. Step 4: Simplify right side
    356,071.20x = 183,534,906,041.28
  5. Step 5: Solve for x
    x = 183,534,906,041.28/356,071.20
  6. Step 6: Final answer
    x = 515,444.40

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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.