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Finding the Fourth Proportional to 358,748.20, 538,122.30 and 268,935.40

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Solution

The fourth proportional to 358,748.20, 538,122.30 and 268,935.40 is: 403,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,748.20 : 538,122.30 = 268,935.40 : x
  2. Step 2: Convert to fraction form
    358,748.20/538,122.30 = 268,935.40/x
  3. Step 3: Cross multiply
    358,748.20x = 538,122.30 × 268,935.40
  4. Step 4: Simplify right side
    358,748.20x = 144,720,135,999.42
  5. Step 5: Solve for x
    x = 144,720,135,999.42/358,748.20
  6. Step 6: Final answer
    x = 403,403.10

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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.