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Finding the Fourth Proportional to 358,906.60, 538,359.90 and 302,919.40

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Solution

The fourth proportional to 358,906.60, 538,359.90 and 302,919.40 is: 454,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,906.60 : 538,359.90 = 302,919.40 : x
  2. Step 2: Convert to fraction form
    358,906.60/538,359.90 = 302,919.40/x
  3. Step 3: Cross multiply
    358,906.60x = 538,359.90 × 302,919.40
  4. Step 4: Simplify right side
    358,906.60x = 163,079,657,892.06
  5. Step 5: Solve for x
    x = 163,079,657,892.06/358,906.60
  6. Step 6: Final answer
    x = 454,379.10

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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.