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Finding the Fourth Proportional to 358,836.80, 538,255.20 and 308,973.20

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Solution

The fourth proportional to 358,836.80, 538,255.20 and 308,973.20 is: 463,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,836.80 : 538,255.20 = 308,973.20 : x
  2. Step 2: Convert to fraction form
    358,836.80/538,255.20 = 308,973.20/x
  3. Step 3: Cross multiply
    358,836.80x = 538,255.20 × 308,973.20
  4. Step 4: Simplify right side
    358,836.80x = 166,306,431,560.64
  5. Step 5: Solve for x
    x = 166,306,431,560.64/358,836.80
  6. Step 6: Final answer
    x = 463,459.80

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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.