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Finding the Fourth Proportional to 358,950.80, 538,426.20 and 309,087.20

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Solution

The fourth proportional to 358,950.80, 538,426.20 and 309,087.20 is: 463,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,950.80 : 538,426.20 = 309,087.20 : x
  2. Step 2: Convert to fraction form
    358,950.80/538,426.20 = 309,087.20/x
  3. Step 3: Cross multiply
    358,950.80x = 538,426.20 × 309,087.20
  4. Step 4: Simplify right side
    358,950.80x = 166,420,646,564.64
  5. Step 5: Solve for x
    x = 166,420,646,564.64/358,950.80
  6. Step 6: Final answer
    x = 463,630.80

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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.