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Finding the Fourth Proportional to 354,878.10, 531,442.35 and 235,905.30

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Solution

The fourth proportional to 354,878.10, 531,442.35 and 235,905.30 is: 353,276.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,878.10 : 531,442.35 = 235,905.30 : x
  2. Step 2: Convert to fraction form
    354,878.10/531,442.35 = 235,905.30/x
  3. Step 3: Cross multiply
    354,878.10x = 531,442.35 × 235,905.30
  4. Step 4: Simplify right side
    354,878.10x = 125,370,067,009.46
  5. Step 5: Solve for x
    x = 125,370,067,009.46/354,878.10
  6. Step 6: Final answer
    x = 353,276.43

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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.