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Finding the Fourth Proportional to 354,068.74, 488,815.12 and 245,331.10

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Solution

The fourth proportional to 354,068.74, 488,815.12 and 245,331.10 is: 338,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,068.74 : 488,815.12 = 245,331.10 : x
  2. Step 2: Convert to fraction form
    354,068.74/488,815.12 = 245,331.10/x
  3. Step 3: Cross multiply
    354,068.74x = 488,815.12 × 245,331.10
  4. Step 4: Simplify right side
    354,068.74x = 119,921,551,086.23
  5. Step 5: Solve for x
    x = 119,921,551,086.23/354,068.74
  6. Step 6: Final answer
    x = 338,695.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.